Application of the Kolmogorov-Smirnov test to CMB data: Is the universe really weakly random?

Details Application of the Kolmogorov-Smirnov test to CMB data: Is the universe really weakly random? Application of the Kolmogorov-Smirnov test to CMB data: Is the universe really weakly random?

2011-05-25

arxiv.org/abs/1105.5051v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 5 figures, submitted to A&A

Scientific paper

10.1051/0004-6361/201117344

A recent application of the Kolmogorov-Smirnov test to the WMAP 7 year W-band maps claims evidence that the CMB is "weakly random", and that only 20% of the signal can be explained as a random Gaussian field. I here repeat this analysis, and in contrast to the original result find no evidence for deviation from the standard {\Lambda}CDM model. Instead, the results of the original analysis are consistent with not properly taking into account the correlations of the {\Lambda}CDM power spectrum.

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