Disks in the sky: A reassessment of the WMAP “cold spot”

  title={Disks in the sky: A reassessment of the WMAP “cold spot”},
  author={R. Zhang and D. Huterer},
  journal={Astroparticle Physics},
  • R. Zhang, D. Huterer
  • Published 2010
  • Physics
  • Astroparticle Physics
  • Abstract We reassess the evidence that WMAP temperature maps contain a statistically significant “cold spot” by repeating the analysis using simple circular top-hat (disk) weights, as well as Gaussian weights of varying width. Contrary to previous results that used Spherical Mexican Hat Wavelets, we find no significant signal at any scale when we compare the coldest spot from our sky to ones from simulated Gaussian random, isotropic maps. We trace this apparent discrepancy to the fact that WMAP… CONTINUE READING
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