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- Title
Searching for non-Gaussianity in the Planck data.
- Authors
Rebouças, Marcelo J.; Bernui, Armando; Heavens, A. F.; Starck, J.-L.; Krone-Martins, A.
- Abstract
The statistical properties of the temperature anisotropies and polarization of the of cosmic microwave background (CMB) radiation offer a powerful probe of the physics of the early universe. In recent works a statistical procedure based upon the calculation of the kurtosis and skewness of the data in patches of CMB sky-sphere has been proposed and used to investigate the large-angle deviation from Gaussianity in WMAP maps. Here we briefly address the question as to how this analysis of Gaussianity is modified if the foreground-cleaned Planck maps are considered. We show that although the foreground-cleaned Planck maps present significant deviation from Gaussianity of different degrees when a less severe mask is used, they become consistent with Gaussianity, as detected by our indicators, when masked with the union mask U73.
- Publication
Proceedings of the International Astronomical Union, 2014, Vol 10, Issue S306, p147
- ISSN
1743-9213
- Publication type
Article
- DOI
10.1017/S1743921314013829