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Long-range correlation in cosmic microwave background radiation

Movahed, M. S ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevE.84.021103
  3. Abstract:
  4. We investigate the statistical anisotropy and Gaussianity of temperature fluctuations of Cosmic Microwave Background (CMB) radiation data from the Wilkinson Microwave Anisotropy Probe survey, using the Multifractal Detrended Fluctuation Analysis, Rescaled Range, and Scaled Windowed Variance methods. 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 the temperature fluctuation of CMB radiation is mainly due to the long-range correlations, and the map is consistent with a Gaussian distribution
  5. Keywords:
  6. Cosmic microwave background radiation ; Gaussianity ; Long range correlations ; Multifractal behavior ; Multifractal detrended fluctuation analysis ; Multifractality ; Temperature fluctuation ; Variance method ; Wilkinson microwave anisotropy probe ; Anisotropy ; Astronomy ; Fractals ; Temperature distribution ; Cosmology
  7. Source: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics ; Volume 84, Issue 2 , 2011 ; 15393755 (ISSN)
  8. URL: http://journals.aps.org/pre/abstract/10.1103/PhysRevE.84.021103