Tuesday, 09 February
User Guide for the Discrete Dipole Approximation Code DDSCAT 7.1
http://www.arxiv.org/abs/1002.1505
B. T. Draine (1),
P. J. Flatau (2) ((1) Princeton University, (2) Scripps Institution of Oceanography, UCSD)
83 pages, 11 figures
DDSCAT 7.
(more)
09 02 10 - 08:49 |
No comments
Three carbon-enhanced metal-poor dwarf stars from the SDSS - Chemical
abundances from CO^5BOLD 3D hydrodynamical model atmospheres
http://www.arxiv.org/abs/1002.1670
N.T. Behara,
P. Bonifacio,
H.-G. Ludwig,
L. Sbordone,
J.I. González Hernández,
E. Caffau
12 pages, 15 figures. Accepted for publication in A&A
The origin of carbon-enhanced metal-poor stars enriched with both s and r
elements is highly debated.
(more)
09 02 10 - 08:49 |
No comments
Generation of Alfven Waves by Magnetic Reconnection
http://www.arxiv.org/abs/1002.1360
Hiromitsu Kigure,
Kunio Takahashi,
Kazunari Shibata,
Takaaki Yokoyama,
Satoshi Nozawa
29 pages, 17 figures
In this paper, results of 2.
(more)
09 02 10 - 08:48 |
No comments
Unfolding the Hierarchy of Voids
http://www.arxiv.org/abs/1002.1503
M.A. Aragon-Calvo,
R. van de Weygaert,
P. Araya-Melo,
E. Platen,
A.S. Szalay
5 pages, 2 figures
We present a framework for the hierarchical identification and
characterization of voids based on the Watershed Void Finder.
(more)
09 02 10 - 08:48 |
No comments
Simplified models for photohadronic interactions in cosmic accelerators
http://www.arxiv.org/abs/1002.1310
Svenja Hümmer,
Michael Rüger,
Felix Spanier,
Walter Winter
39 pages, 13 (color) figures, 6 tables
We discuss simplified models for photo-meson production in cosmic
accelerators, such as Active Galactic Nuclei and Gamma-Ray Bursts.
(more)
09 02 10 - 08:47 |
No comments
Monday, 08 February
Numerical Models of Sgr A*
http://www.arxiv.org/abs/1002.1261
M. Moscibrodzka,
C.F. Gammie,
J. Dolence,
H. Shiokawa,
P.K. Leung
To appear in "The Galactic Center: A Window on the Nuclear Environment of Disk Galaxies", ed. Mark Morris, Daniel Q. Wang and Feng Yuan
We review results from general relativistic axisymmetric magnetohydrodynamic
simulations of accretion in Sgr A*.
(more)
08 02 10 - 14:16 |
No comments
Large-scale inhomogeneities may improve the cosmic concordance of
supernovae
http://www.arxiv.org/abs/1002.1232
Luca Amendola,
Kimmo Kainulainen,
Valerio Marra,
Miguel Quartin
this http URL
We reanalyse the current data from the supernovae observations including the
weak lensing effects caused by inhomogeneities.
(more)
08 02 10 - 14:16 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD
Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117
K. Parchevsky,
A. Kosovichev,
E. Khomenko,
V. Olshevsky,
M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD
waves,excited by subphotospheric perturbations, in two different ("deep" and
"shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
User Guide for the Discrete Dipole Approximation Code DDSCAT 7.1
http://www.arxiv.org/abs/1002.1505B. T. Draine (1), P. J. Flatau (2) ((1) Princeton University, (2) Scripps Institution of Oceanography, UCSD)
83 pages, 11 figures
DDSCAT 7.
(more)
09 02 10 - 08:49 |
No comments
Three carbon-enhanced metal-poor dwarf stars from the SDSS - Chemical
abundances from CO^5BOLD 3D hydrodynamical model atmospheres
http://www.arxiv.org/abs/1002.1670
N.T. Behara,
P. Bonifacio,
H.-G. Ludwig,
L. Sbordone,
J.I. González Hernández,
E. Caffau
12 pages, 15 figures. Accepted for publication in A&A
The origin of carbon-enhanced metal-poor stars enriched with both s and r
elements is highly debated.
(more)
09 02 10 - 08:49 |
No comments
Generation of Alfven Waves by Magnetic Reconnection
http://www.arxiv.org/abs/1002.1360
Hiromitsu Kigure,
Kunio Takahashi,
Kazunari Shibata,
Takaaki Yokoyama,
Satoshi Nozawa
29 pages, 17 figures
In this paper, results of 2.
(more)
09 02 10 - 08:48 |
No comments
Unfolding the Hierarchy of Voids
http://www.arxiv.org/abs/1002.1503
M.A. Aragon-Calvo,
R. van de Weygaert,
P. Araya-Melo,
E. Platen,
A.S. Szalay
5 pages, 2 figures
We present a framework for the hierarchical identification and
characterization of voids based on the Watershed Void Finder.
(more)
09 02 10 - 08:48 |
No comments
Simplified models for photohadronic interactions in cosmic accelerators
http://www.arxiv.org/abs/1002.1310
Svenja Hümmer,
Michael Rüger,
Felix Spanier,
Walter Winter
39 pages, 13 (color) figures, 6 tables
We discuss simplified models for photo-meson production in cosmic
accelerators, such as Active Galactic Nuclei and Gamma-Ray Bursts.
(more)
09 02 10 - 08:47 |
No comments
Monday, 08 February
Numerical Models of Sgr A*
http://www.arxiv.org/abs/1002.1261
M. Moscibrodzka,
C.F. Gammie,
J. Dolence,
H. Shiokawa,
P.K. Leung
To appear in "The Galactic Center: A Window on the Nuclear Environment of Disk Galaxies", ed. Mark Morris, Daniel Q. Wang and Feng Yuan
We review results from general relativistic axisymmetric magnetohydrodynamic
simulations of accretion in Sgr A*.
(more)
08 02 10 - 14:16 |
No comments
Large-scale inhomogeneities may improve the cosmic concordance of
supernovae
http://www.arxiv.org/abs/1002.1232
Luca Amendola,
Kimmo Kainulainen,
Valerio Marra,
Miguel Quartin
this http URL
We reanalyse the current data from the supernovae observations including the
weak lensing effects caused by inhomogeneities.
(more)
08 02 10 - 14:16 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD
Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117
K. Parchevsky,
A. Kosovichev,
E. Khomenko,
V. Olshevsky,
M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD
waves,excited by subphotospheric perturbations, in two different ("deep" and
"shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Three carbon-enhanced metal-poor dwarf stars from the SDSS - Chemical abundances from CO^5BOLD 3D hydrodynamical model atmospheres
http://www.arxiv.org/abs/1002.1670N.T. Behara, P. Bonifacio, H.-G. Ludwig, L. Sbordone, J.I. González Hernández, E. Caffau
12 pages, 15 figures. Accepted for publication in A&A
The origin of carbon-enhanced metal-poor stars enriched with both s and r elements is highly debated.
(more)
09 02 10 - 08:49 |
No comments
Generation of Alfven Waves by Magnetic Reconnection
http://www.arxiv.org/abs/1002.1360
Hiromitsu Kigure,
Kunio Takahashi,
Kazunari Shibata,
Takaaki Yokoyama,
Satoshi Nozawa
29 pages, 17 figures
In this paper, results of 2.
(more)
09 02 10 - 08:48 |
No comments
Unfolding the Hierarchy of Voids
http://www.arxiv.org/abs/1002.1503
M.A. Aragon-Calvo,
R. van de Weygaert,
P. Araya-Melo,
E. Platen,
A.S. Szalay
5 pages, 2 figures
We present a framework for the hierarchical identification and
characterization of voids based on the Watershed Void Finder.
(more)
09 02 10 - 08:48 |
No comments
Simplified models for photohadronic interactions in cosmic accelerators
http://www.arxiv.org/abs/1002.1310
Svenja Hümmer,
Michael Rüger,
Felix Spanier,
Walter Winter
39 pages, 13 (color) figures, 6 tables
We discuss simplified models for photo-meson production in cosmic
accelerators, such as Active Galactic Nuclei and Gamma-Ray Bursts.
(more)
09 02 10 - 08:47 |
No comments
Monday, 08 February
Numerical Models of Sgr A*
http://www.arxiv.org/abs/1002.1261
M. Moscibrodzka,
C.F. Gammie,
J. Dolence,
H. Shiokawa,
P.K. Leung
To appear in "The Galactic Center: A Window on the Nuclear Environment of Disk Galaxies", ed. Mark Morris, Daniel Q. Wang and Feng Yuan
We review results from general relativistic axisymmetric magnetohydrodynamic
simulations of accretion in Sgr A*.
(more)
08 02 10 - 14:16 |
No comments
Large-scale inhomogeneities may improve the cosmic concordance of
supernovae
http://www.arxiv.org/abs/1002.1232
Luca Amendola,
Kimmo Kainulainen,
Valerio Marra,
Miguel Quartin
this http URL
We reanalyse the current data from the supernovae observations including the
weak lensing effects caused by inhomogeneities.
(more)
08 02 10 - 14:16 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD
Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117
K. Parchevsky,
A. Kosovichev,
E. Khomenko,
V. Olshevsky,
M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD
waves,excited by subphotospheric perturbations, in two different ("deep" and
"shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Generation of Alfven Waves by Magnetic Reconnection
http://www.arxiv.org/abs/1002.1360Hiromitsu Kigure, Kunio Takahashi, Kazunari Shibata, Takaaki Yokoyama, Satoshi Nozawa
29 pages, 17 figures
In this paper, results of 2.
(more)
09 02 10 - 08:48 |
No comments
Unfolding the Hierarchy of Voids
http://www.arxiv.org/abs/1002.1503
M.A. Aragon-Calvo,
R. van de Weygaert,
P. Araya-Melo,
E. Platen,
A.S. Szalay
5 pages, 2 figures
We present a framework for the hierarchical identification and
characterization of voids based on the Watershed Void Finder.
(more)
09 02 10 - 08:48 |
No comments
Simplified models for photohadronic interactions in cosmic accelerators
http://www.arxiv.org/abs/1002.1310
Svenja Hümmer,
Michael Rüger,
Felix Spanier,
Walter Winter
39 pages, 13 (color) figures, 6 tables
We discuss simplified models for photo-meson production in cosmic
accelerators, such as Active Galactic Nuclei and Gamma-Ray Bursts.
(more)
09 02 10 - 08:47 |
No comments
Monday, 08 February
Numerical Models of Sgr A*
http://www.arxiv.org/abs/1002.1261
M. Moscibrodzka,
C.F. Gammie,
J. Dolence,
H. Shiokawa,
P.K. Leung
To appear in "The Galactic Center: A Window on the Nuclear Environment of Disk Galaxies", ed. Mark Morris, Daniel Q. Wang and Feng Yuan
We review results from general relativistic axisymmetric magnetohydrodynamic
simulations of accretion in Sgr A*.
(more)
08 02 10 - 14:16 |
No comments
Large-scale inhomogeneities may improve the cosmic concordance of
supernovae
http://www.arxiv.org/abs/1002.1232
Luca Amendola,
Kimmo Kainulainen,
Valerio Marra,
Miguel Quartin
this http URL
We reanalyse the current data from the supernovae observations including the
weak lensing effects caused by inhomogeneities.
(more)
08 02 10 - 14:16 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD
Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117
K. Parchevsky,
A. Kosovichev,
E. Khomenko,
V. Olshevsky,
M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD
waves,excited by subphotospheric perturbations, in two different ("deep" and
"shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Unfolding the Hierarchy of Voids
http://www.arxiv.org/abs/1002.1503M.A. Aragon-Calvo, R. van de Weygaert, P. Araya-Melo, E. Platen, A.S. Szalay
5 pages, 2 figures
We present a framework for the hierarchical identification and characterization of voids based on the Watershed Void Finder.
(more)
09 02 10 - 08:48 |
No comments
Simplified models for photohadronic interactions in cosmic accelerators
http://www.arxiv.org/abs/1002.1310
Svenja Hümmer,
Michael Rüger,
Felix Spanier,
Walter Winter
39 pages, 13 (color) figures, 6 tables
We discuss simplified models for photo-meson production in cosmic
accelerators, such as Active Galactic Nuclei and Gamma-Ray Bursts.
(more)
09 02 10 - 08:47 |
No comments
Monday, 08 February
Numerical Models of Sgr A*
http://www.arxiv.org/abs/1002.1261
M. Moscibrodzka,
C.F. Gammie,
J. Dolence,
H. Shiokawa,
P.K. Leung
To appear in "The Galactic Center: A Window on the Nuclear Environment of Disk Galaxies", ed. Mark Morris, Daniel Q. Wang and Feng Yuan
We review results from general relativistic axisymmetric magnetohydrodynamic
simulations of accretion in Sgr A*.
(more)
08 02 10 - 14:16 |
No comments
Large-scale inhomogeneities may improve the cosmic concordance of
supernovae
http://www.arxiv.org/abs/1002.1232
Luca Amendola,
Kimmo Kainulainen,
Valerio Marra,
Miguel Quartin
this http URL
We reanalyse the current data from the supernovae observations including the
weak lensing effects caused by inhomogeneities.
(more)
08 02 10 - 14:16 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD
Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117
K. Parchevsky,
A. Kosovichev,
E. Khomenko,
V. Olshevsky,
M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD
waves,excited by subphotospheric perturbations, in two different ("deep" and
"shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Simplified models for photohadronic interactions in cosmic accelerators
http://www.arxiv.org/abs/1002.1310Svenja Hümmer, Michael Rüger, Felix Spanier, Walter Winter
39 pages, 13 (color) figures, 6 tables
We discuss simplified models for photo-meson production in cosmic accelerators, such as Active Galactic Nuclei and Gamma-Ray Bursts.
(more)
09 02 10 - 08:47 |
No comments
Monday, 08 February
Numerical Models of Sgr A*
http://www.arxiv.org/abs/1002.1261
M. Moscibrodzka,
C.F. Gammie,
J. Dolence,
H. Shiokawa,
P.K. Leung
To appear in "The Galactic Center: A Window on the Nuclear Environment of Disk Galaxies", ed. Mark Morris, Daniel Q. Wang and Feng Yuan
We review results from general relativistic axisymmetric magnetohydrodynamic
simulations of accretion in Sgr A*.
(more)
08 02 10 - 14:16 |
No comments
Large-scale inhomogeneities may improve the cosmic concordance of
supernovae
http://www.arxiv.org/abs/1002.1232
Luca Amendola,
Kimmo Kainulainen,
Valerio Marra,
Miguel Quartin
this http URL
We reanalyse the current data from the supernovae observations including the
weak lensing effects caused by inhomogeneities.
(more)
08 02 10 - 14:16 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD
Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117
K. Parchevsky,
A. Kosovichev,
E. Khomenko,
V. Olshevsky,
M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD
waves,excited by subphotospheric perturbations, in two different ("deep" and
"shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Numerical Models of Sgr A*
http://www.arxiv.org/abs/1002.1261M. Moscibrodzka, C.F. Gammie, J. Dolence, H. Shiokawa, P.K. Leung
To appear in "The Galactic Center: A Window on the Nuclear Environment of Disk Galaxies", ed. Mark Morris, Daniel Q. Wang and Feng Yuan
We review results from general relativistic axisymmetric magnetohydrodynamic simulations of accretion in Sgr A*.
(more)
08 02 10 - 14:16 |
No comments
Large-scale inhomogeneities may improve the cosmic concordance of
supernovae
http://www.arxiv.org/abs/1002.1232
Luca Amendola,
Kimmo Kainulainen,
Valerio Marra,
Miguel Quartin
this http URL
We reanalyse the current data from the supernovae observations including the
weak lensing effects caused by inhomogeneities.
(more)
08 02 10 - 14:16 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD
Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117
K. Parchevsky,
A. Kosovichev,
E. Khomenko,
V. Olshevsky,
M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD
waves,excited by subphotospheric perturbations, in two different ("deep" and
"shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Large-scale inhomogeneities may improve the cosmic concordance of supernovae
http://www.arxiv.org/abs/1002.1232Luca Amendola, Kimmo Kainulainen, Valerio Marra, Miguel Quartin
this http URL
We reanalyse the current data from the supernovae observations including the weak lensing effects caused by inhomogeneities.
(more)
08 02 10 - 14:16 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD
Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117
K. Parchevsky,
A. Kosovichev,
E. Khomenko,
V. Olshevsky,
M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD
waves,excited by subphotospheric perturbations, in two different ("deep" and
"shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Numerical Simulation of Excitation and Propagation of Helioseismic MHD Waves in Magnetostatic Models of Sunspots
http://www.arxiv.org/abs/1002.1117K. Parchevsky, A. Kosovichev, E. Khomenko, V. Olshevsky, M. Collados
17 pages, 9 figures
We present comparison of numerical simulations of propagation of MHD waves,excited by subphotospheric perturbations, in two different ("deep" and "shallow") magnetostatic models of the sunspots.
(more)
08 02 10 - 14:13 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density
profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085
S. Pasetto,
E.K. Grebel,
P. Berczik,
R. Spurzem,
W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating
models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
On the isolated dwarf galaxies: from cuspy to flat dark matter density profiles and metallicity gradients
http://www.arxiv.org/abs/1002.1085S. Pasetto, E.K. Grebel, P. Berczik, R. Spurzem, W. Dehnen
Accepted the 28/01/10
The chemodynamical evolution of spherical multi-component self-gravitating models for isolated dwarf galaxies is studied.
(more)
08 02 10 - 14:12 |
No comments
Friday, 05 February
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838
D. Gruen,
S. Seitz,
J. Koppenhoefer,
A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when
constraints on cosmological parameters are to be extracted from large area weak
lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like
Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Bias-Free Shear Estimation using Artificial Neural Networks
http://www.arxiv.org/abs/1002.0838D. Gruen, S. Seitz, J. Koppenhoefer, A. Riffeser
21 pages, 9 figures; re-submitted to ApJ after referee comments have been taken into account
Bias due to imperfect shear calibration is the biggest obstacle when constraints on cosmological parameters are to be extracted from large area weak lensing surveys such as Pan-STARRS-3pi, DES or future satellite missions like Euclid.
(more)
05 02 10 - 01:50 |
No comments
Wednesday, 03 February
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503
F. Fraschetti (Arizona/LUTh, Obs-Paris),
J.M. Alimi (LUTh, Obs-Paris),
J. Courtin (LUTh, Obs-Paris),
P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial
non-Gaussianity in the density fluctuation field quantified by the non-linear
parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Primordial non-Gaussianity in density fluctuations
http://www.arxiv.org/abs/1002.0503F. Fraschetti (Arizona/LUTh, Obs-Paris), J.M. Alimi (LUTh, Obs-Paris), J. Courtin (LUTh, Obs-Paris), P.S. Corasaniti (LUTh, Obs-Paris)
5 pages, 2 figures; in press in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009
We present N-body cosmological numerical simulations including a primordial non-Gaussianity in the density fluctuation field quantified by the non-linear parameter $f_{NL}$.
(more)
03 02 10 - 14:37 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar
Coronal Arcades
http://www.arxiv.org/abs/1002.0469
S. Rial,
I. Arregui,
J. Terradas,
R. Oliver,
J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of
oscillations in a two-dimensional coronal arcade by including the
three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Three-Dimensional Propagation of Magnetohydrodynamic Waves in Solar Coronal Arcades
http://www.arxiv.org/abs/1002.0469S. Rial, I. Arregui, J. Terradas, R. Oliver, J.L. Ballester
38 pages, 50 figures
We numerically investigate the excitation and temporal evolution of oscillations in a two-dimensional coronal arcade by including the three-dimensional propagation of perturbations.
(more)
03 02 10 - 14:36 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with
the Virtual Observatory
http://www.arxiv.org/abs/1002.0433
J.D. Santander-Vela (1 and 2),
A. Delgado (1),
N. Delmotte (1),
M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or
software agents on their behalf) to a stream of observations from all existing
facilities, the ability to access and to further interpret the origin,
relationships, and processing steps on archived astronomical assets (their
Provenance) is a requirement for proper observation selection, and quality
assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Data Provenance: Use Cases for the ESO archive, and Interactions with the Virtual Observatory
http://www.arxiv.org/abs/1002.0433J.D. Santander-Vela (1 and 2), A. Delgado (1), N. Delmotte (1), M. Vuong (1) ((1) European Southern Observatory, (2) Institute of Astrophysics of Andalucia-CSIC)
4 pages, 2 figures, to appear in the Proceedings of the Astronomical Data Analysis Software and Systems XIX meeting (as P64), in the ASP Conference Series
In the Virtual Observatory era, where we intend to expose scientists (or software agents on their behalf) to a stream of observations from all existing facilities, the ability to access and to further interpret the origin, relationships, and processing steps on archived astronomical assets (their Provenance) is a requirement for proper observation selection, and quality assessment.
(more)
03 02 10 - 14:34 |
No comments
The origin and propagation of variability in the outflows of long
duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361
Brian J. Morsony,
Davide Lazzati,
Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets
propagating through their stellar progenitor material and subsequently through
the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
The origin and propagation of variability in the outflows of long duration gamma-ray bursts
http://www.arxiv.org/abs/1002.0361Brian J. Morsony, Davide Lazzati, Mitchell C. Begelman
16 pages, 12 figues, submitted to ApJ
We present the results of hydrodynamical simulations of gamma-ray burst jets propagating through their stellar progenitor material and subsequently through the surrounding circumstellar medium.
(more)
03 02 10 - 14:33 |
No comments
Monday, 01 February
A GPU-based Calculation Method for Near Field Effects of Cherenkov
Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341
Chia-Yu Hu,
Chih-Ching Chen,
Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has
become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
A GPU-based Calculation Method for Near Field Effects of Cherenkov Radiation Induced by Ultra High Energy Cosmic Neutrinos
http://www.arxiv.org/abs/1001.5341Chia-Yu Hu, Chih-Ching Chen, Pisin Chen
8 pages, 9 figures, presented at the CosPA Symposium, Melbourne, Australia, November 2009
The radio approach for detecting the ultra-high energy cosmic neutrinos has become a mature field.
(more)
01 02 10 - 09:34 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274
J. E. Steiner (1),
R. B. Menezes (1),
T. V. Ricci (1),
A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to
obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
PCA Tomography and its application to nearby galactic nuclei
http://www.arxiv.org/abs/1001.5274J. E. Steiner (1), R. B. Menezes (1), T. V. Ricci (1), A. S. Oliveira (2) ((1) IAG-USP, (2) IP&D-Univap)
4 pages, 1 figure, 1 table, to be published in the Proceedings of the IAU Symposium no. 267
With the development of modern technologies such as IFUs, it is possible to obtain data cubes in which one produces images with spectral resolution.
(more)
01 02 10 - 09:32 |
No comments
Wednesday, 27 January
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721
Matthias Hoeft (TLS),
Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in
large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
http://www.arxiv.org/abs/1001.4721Matthias Hoeft (TLS), Stefan Gottloeber (AIP)
23 pages. To appear in Advances in Astronomy, Dwarf-Galaxy Cosmology issue
Galaxy surveys have shown that luminous galaxies are mainly distributed in large filaments and galaxy clusters.
(more)
27 01 10 - 08:54 |
No comments
Tuesday, 26 January
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation
and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456
Christoph Federrath,
Robi Banerjee,
Paul C. Clark,
Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR)
hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation and Comparison of Sink Particles in AMR and SPH
http://www.arxiv.org/abs/1001.4456Christoph Federrath, Robi Banerjee, Paul C. Clark, Ralf S. Klessen
30 pages, 17 figures, submitted to ApJ
We implemented sink particles in the adaptive mesh refinement (AMR) hydrodynamics code FLASH.
(more)
26 01 10 - 08:13 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric
motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307
Takuma Matsumoto,
Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open
flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Nonlinear propagation of Alfven waves driven by observed photospheric motions: Application to the coronal heating and spicule formation
http://www.arxiv.org/abs/1001.4307Takuma Matsumoto, Kazunari Shibata
We have performed MHD simulations of Alfven wave propagation along an open flux tube in the solar atmosphere.
(more)
26 01 10 - 08:12 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent
Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138
Casey Meakin,
David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar
convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Some Properties of the Kinetic Energy Flux and Dissipation in Turbulent Stellar Convection Zones
http://www.arxiv.org/abs/1001.4138Casey Meakin, David Arnett
Refereed Conference Proceeding, HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, to be published in Astrophys. Space Sci
We investigate simulated turbulent flow within thermally driven stellar convection zones.
(more)
26 01 10 - 08:10 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127
Weishan Zhu,
Long-Long Feng,
Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with
cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Vorticity of IGM Velocity Field on Large Scales
http://www.arxiv.org/abs/1001.4127Weishan Zhu, Long-Long Feng, Li-Zhi Fang
27 pages, 10 figures, accepted for publication in ApJ
We investigate the vorticity of the IGM velocity field on large scales with cosmological hydrodynamic simulation of the concordance model of LCDM.
(more)
26 01 10 - 08:07 |
No comments
Sunday, 24 January
On the role of supernovae-driven turbulence in the feeding of
supermassive black holes
http://www.arxiv.org/abs/1001.3883
Alexander Hobbs,
Sergei Nayakshin,
Chris Power,
Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto
supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
On the role of supernovae-driven turbulence in the feeding of supermassive black holes
http://www.arxiv.org/abs/1001.3883Alexander Hobbs, Sergei Nayakshin, Chris Power, Andrew King
19 pages, 17 figures. Submitted to MNRAS
It has long been recognised that the main obstacle to accretion of gas onto supermassive black holes (SMBHs) is large specific angular momentum.
(more)
24 01 10 - 22:47 |
No comments
Thursday, 21 January
Transparent scientific usage as the key to success of the Virtual
Observatory
http://www.arxiv.org/abs/1001.3589
Igor Chilingarian,
Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Transparent scientific usage as the key to success of the Virtual Observatory
http://www.arxiv.org/abs/1001.3589Igor Chilingarian, Ivan Zolotukhin
Proceedings of the ADASS-XIX conference, 4 pages, 1 figure, to appear in ASP Conf. Series
Nowadays, Virtual Observatory standards, resources, and services became powerful enough to help astronomers making real science on everyday basis.
(more)
21 01 10 - 12:12 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH
Simulations
http://www.arxiv.org/abs/1001.3525
Jun-Hwan Choi (UNLV),
Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow
model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Multiphase and Variable Velocity Galactic Outflow in Cosmological SPH Simulations
http://www.arxiv.org/abs/1001.3525Jun-Hwan Choi (UNLV), Kentaro Nagamine (UNLV)
this http URL
We develop a new multiphase and variable velocity (MVV) galactic outflow model for cosmological smoothed particle hydrodynamic (SPH) simulations.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with
radiative cooling
http://www.arxiv.org/abs/1001.3571
Feng Yuan (SHAO),
Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of
hot accretion flows is that the flow is convectively unstable, because of its
inward increase of entropy.
(more)
21 01 10 - 12:11 |
No comments
Two-dimensional hydrodynamical simulation of hot accretion flows with radiative cooling
http://www.arxiv.org/abs/1001.3571Feng Yuan (SHAO), Defu Bu (SHAO)
9 pages, 9 figures; submitted to MNRAS
The most important finding of two-dimensional hydrodynamical simulations of hot accretion flows is that the flow is convectively unstable, because of its inward increase of entropy.
(more)
