Testing Gaussianity in the WMAP data of OT foreground reduced map

Abstract

A considerable effort has recently gone into the study of Gaussianity of cosmic microwave background (CMB) data. Among such attempts, there is one with two non-Gaussianity indicators, proposed by the authors, and used in a search for significant deviation from Gaussianity in the WMAP internal linear combination (ILC) and in the single frequency WMAP maps with the KQ75 mask. Here we extend and complement these results by performing a similar analysis for the de Oliveira-Costa and Tegmark (OT) WMAP three-year $KQ75$ masked map, in which the foreground is reduced through a different statistical cleaning procedure.

4 pages

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Cited by in corpus (4)

• Non-gaussianity in the foreground-reduced CMB maps
• Foreground influence on primordial non-Gaussianity estimates: needlet analysis of WMAP 5-year data
• Non-Gaussianity in the HILC foreground-reduced three-year WMAP CMB map
• A Study of Gaussianity in CMB band maps