HackerPapers

arXiv:1105.5051astro-ph.CO

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

Sigurd Kirkevold Næss

Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.

Abstract

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 ΛCDM model. Instead, the results of the original analysis are consistent with not properly taking into account the correlations of the ΛCDM power spectrum.

arXiv comments
4 pages, 5 figures, submitted to A&A
Journal reference
DOI
doi:10.1051/0004-6361/201117344
Subjects
astro-ph.COCosmology and Nongalactic Astrophysics

On Hacker News

Linked by 1 identifiable commenter in 1 comment across 1 thread, from Dec 2015 to Dec 2015.

Comments linking this paper, per year.

Discussed in comments1 thread

  1. Cosmic Microwave Background Radiation Power Spectrum as a Random Bit Generator 1 comment

    • This is mainly Gurzadyan's work, and it shows such a complete lack of understanding for basic statistical analysis it's not even funny. They basically assume that if you have an i.i.d. random vector x, then a linearly transformed vector z = Q x, with Q some linear map, should…

      dagssView on HNParent context

Submitted to Hacker News

Connected through shared HN threads, not inferred similarity or a recommendation.