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Search for non-Gaussianity in pixel, harmonic and wavelet space: compared and combined

Paolo Cabella·Frode Hansen·Domenico Marinucci·Daniele Pagano·Nicola Vittorio
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Abstract

We present a comparison between three approaches to test non-Gaussianity of cosmic microwave background data. The Minkowski functionals, the empirical process method and the skewness of wavelet coefficients are applied to maps generated from non-standard inflationary models and to Gaussian maps with point sources included. We discuss the different power of the pixel, harmonic and wavelet space methods on these simulated almost full-sky data (with Planck like noise). We also suggest a new procedure consisting of a combination of statistics in pixel, harmonic and wavelet space.

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Paolo Cabella, Frode Hansen, Domenico Marinucci, Daniele Pagano, Nicola Vittorio. 2004-01-15. Search for non-Gaussianity in pixel, harmonic and wavelet space: compared and combined. https://doi.org/10.1103/physrevd.69.063007

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