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Long range correlation in cosmic microwave background radiation

M. Sadegh Movahed·F. Ghasemi·Sohrab Rahvar·M. Reza Rahimi Tabar
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Abstract

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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M. Sadegh Movahed, F. Ghasemi, Sohrab Rahvar, M. Reza Rahimi Tabar. 2011-08-03. Long range correlation in cosmic microwave background radiation. https://doi.org/10.1103/physreve.84.021103

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