News

NASA’s Swift and NuSTAR: Black Hole Has Major Flare

CITA National Fellow Dan Wilkins of St. Mary’s University was recently the lead author of a paper that more deeply characterizes the behaviour of supermassive black holes. The results from the observations by NASA’s Explorer missions Swift and the Nuclear Spectroscopic Telescope Array (NuSTAR) could “help us understand how supermassive black holes power some of the brightest objects in t…

Sackler Lecture: The Fourth Paradigm – How Big Data is Changing Science

Sackler Speaker: Alexander Szalay (Johns Hopkins University)

Abstract: The talk will describe how science is changing as a result of the vast amounts of data we are collecting from gene sequencers to telescopes and supercomputers. This “Fourth Paradigm of Science”, predicted by Jim Gray, is moving at full speed, and is transforming one scientific area after…

SXS Simulation Video Featured on BBC Earth

BBC Earth recently featured a video that simulates the collision of two black holes, produced by the Simulating eXtreme Spacetimes (SXS) collaboration.

Black holes are formed by the collapse of massive stars; their gravitational pull is so strong that not even light can escape. If they occur in pairs, they emit intense gravitational energy, causing them to spiral inwards and eventually…

CITA Jamboree 2015

The annual CITA Jamboree not only provides a compact overview of the exciting happenings at CITA to our incoming students and postdocs, but also gives CITAzens a chance to share their research with U of T’s astronomy/astrophysics/physics community.

This year, the Jamboree took place on Wed, Oct 7, 2015. We had a great turnout of students, postdocs, and faculty from various fields who listened…

Aaron Zimmerman is the recipient of the 2014 Beatrice and Vincent Tremaine Fellowship

Aaron Zimmerman is the 16th recipient of the Tremaine Fellowship which is awarded annually at the Canadian Institute for Theoretical Astrophysics. He was selected for his outstanding work in analytic studies in general relativity. In particular Aaron studies how black holes respond to perturbations and emit gravitational waves; he has also helped to develop novel methods to visualize curved…

A new part of the time-domain radio sky

By: Liam Connor and Robert Main

(Image Credit: Andre Recnik; Click to enlarge) The first VLBI image of a pulsar’s scattering screen revealed a linear structure in the sky. This is believed to possibly due to refraction at grazing incidence of current sheets in the ISM, where ripples in the sheets cause an enhanced bending of the light from the pulsar. Analogously, a star’s light along t…

Job Opportunities

CITA is currently accepting applications for the following positions:

Postdoctoral Fellowship

CITA Nationa…

Cristobal Petrovich is the Recipient of the 2015 Gruber Foundation Fellowship

The 2015 Gruber Foundation Fellowship recipient is Cristobal Petrovich from Chile, who will spend the fellowship period at CITA (Canadian Institute for Theoretical Astrophysics) and the Center for Planetary Science at the University of Toronto, where the study of exoplanets is a very active research field. He plans to extend some of the theories of planet migration by taking into account t…

Sponsored by CITA: The West African International Summer School for Young Astronomers

The West African International Summer School for Young Astronomers (WAISSYA) is a week-long introductory course in astronomy for undergraduate science students from around West Africa (and beyond). This is the second time we are holding the school; the first time was in October 2013. Most of our 50 students will be from Nigeria, along with several students from Ghana, the Gambia, Senegal, Egypt,…

Debut on the BBC and Science Channel! the bicep-planck story

Headlines around the world accompanied the announcement in March 2014 by the BICEP2 team that a specific swirly pattern of cosmic microwave background polarization called the B-mode was discovered on large angular scales. After evaluating and rejecting various systematic effects and Milky Way foreground emissions as the cause, the team, including Professor Barth Netterfield and graduate student…

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