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No evidence for the cold spot in the NVSS radio survey

Authors
Journal
Monthly Notices of the Royal Astronomical Society
0035-8711
Publisher
Oxford University Press
Publication Date
Disciplines
  • Astronomy
  • Physics

Abstract

We revisit recent claims that there is a ‘cold spot’ in both number counts and brightness of radio sources in the NRAO (National Radio Astronomy Observatory) VLA (Very Large Array) Sky Survey (NVSS), with location coincident with the previously detected cold spot in Wilkinson Microwave Anisotropy Probe . Such matching cold spots would be difficult if not impossible to explain in the standard Λcold dark matter cosmological model. Contrary to the claim, we find no significant evidence for the radio cold spot, after including systematic effects in NVSS, and carefully accounting for the effect of a posteriori choices when assessing statistical significance.

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