EDP Sciences
Free access
Issue A&A
Volume 497, Number 2, April II 2009
Page(s) 343 - 346
Section Cosmology (including clusters of galaxies)
DOI http://dx.doi.org/10.1051/0004-6361/200911625
Published online 05 March 2009

A&A 497, 343-346 (2009)
DOI: 10.1051/0004-6361/200911625

Kolmogorov cosmic microwave background sky

V. G. Gurzadyan1, A. E. Allahverdyan1, T. Ghahramanyan1, A. L. Kashin1, H. G. Khachatryan1, A. A. Kocharyan1, 2, H. Kuloghlian1, S. Mirzoyan1, E. Poghosian1, and G. Yegorian1

1  Yerevan Physics Institute and Yerevan State University, Yerevan, Armenia
    e-mail: gurzadya@icra.it
2  School of Mathematical Sciences, Monash University, Clayton, Australia

Received 7 January 2009 / Accepted 20 January 2009

Abstract
A new map of the sky representing the degree of randomness in the cosmic microwave background (CMB) temperature has been obtained. The map based on estimation of the Kolmogorov stochasticity parameter clearly distinguishes the contribution of the Galactic disk from the CMB and reveals regions of various degrees of randomness that can reflect the properties of inhomogeneities in the Universe. For example, among the high randomness regions is the southern non-Gaussian anomaly, the Cold Spot, with a stratification expected for the voids. Existence of its counterpart, a Northern Cold Spot with almost identical randomness properties among other low-temperature regions is revealed. By its informative power, Kolmogorov's map can be complementary to the CMB temperature and polarization sky maps.


Key words: cosmology: cosmic microwave background



© ESO 2009

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.

Editor-in-Chief: T. Forveille
Letters Editor-in-Chief: J. Alves
Managing Editor: C. Bertout

ISSN: 0004-6361 ; e-ISSN: 1432-0746
Frequency: 12 volumes per year
Published by: EDP Sciences

Mirror sites: CDS | EDP Sciences
  RSS feeds
© The European Southern Observatory (ESO)