Journal Article

Correlation of supernova redshifts with temperature fluctuations of the cosmic microwave background

V. N. Yershov, V. V. Orlov and A. A. Raikov

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 423, issue 3, pages 2147-2152
Published in print July 2012 | ISSN: 0035-8711
Published online June 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.21026.x
Correlation of supernova redshifts with temperature fluctuations of the cosmic microwave background

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Redshifts of supernova (SN) and gamma-ray burst (GRB) samples are compared with the pixel temperatures of the Wilkinson Microwave Anisotropy Probe (WMAP) seven-year data, the pixel locations corresponding to the SN and GRB sky coordinates. We have found a statistically significant correlation of the SN redshifts with the WMAP data, the average temperature deviation being for redshifts z ranging from 0.5 to 1.0 and for z∈ (0.0, 0.4). The latter value accords with the theoretical estimates for the distortion of the cosmic microwave background due to the integrated Sachs–Wolfe effect, whereas the larger anomaly for higher redshifts should be studied in more detail in the future.

Keywords: methods: statistical; gamma-ray burst: general; supernovae: general; cosmic background radiation

Journal Article.  4261 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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