Local non-Gaussianity Estimators for the CMB Data Analysis

Andrei Frolov

April 21, 2011

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Abstract: I will talk about new space-local, non-parametric, data-linear non-Gaussianity estimators for CMB analysis I’ve been developing. These are based on order statistics and extend the idea of L-moments to random fields. Applying them to CMB data, it is possible to map out CMB variance on the sky and do local f_nl-type skewness analysis. I will also talk about cold spot in WMAP data.