Long range correlation in cosmic microwave background radiation

Details Long range correlation in cosmic microwave background radiation Long range correlation in cosmic microwave background radiation

2006-02-21

arxiv.org/abs/astro-ph/0602461v2

Phys.Rev.E84:021103 (2011)

Astronomy and Astrophysics

Astrophysics

10 pages, 7 figures, V2: Added comments, references and major corrections

Scientific paper

10.1103/PhysRevE.84.021103

We investigate the statistical anisotropy and Gaussianity of temperature fluctuations of Cosmic Microwave Background radiation (CMB) data from {\it Wilkinson Microwave Anisotropy Probe} survey, using the multifractal detrended fluctuation analysis, rescaled range and scaled windowed variance methods. The multifractal detrended fluctuation analysis shows that CMB fluctuations has a long range correlation function with a multifractal behavior. By comparing the shuffled and surrogate series of CMB data, we conclude that the multifractality nature of temperature fluctuation of CMB is mainly due to the long-range correlations and the map is consistent with a Gaussian distribution.

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