Galaxy Counts on the CMB Cold Spot

Details Galaxy Counts on the CMB Cold Spot Galaxy Counts on the CMB Cold Spot

2009-11-11

arxiv.org/abs/0911.2223v2

Astrophys.J.714:825,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

9 pages. Minor updates to match the article accepted to ApJ.

Scientific paper

10.1088/0004-637X/714/1/825

The Cold Spot on the Cosmic Microwave Background could arise due to a supervoid at low redshift through the integrated Sachs-Wolfe effect. We imaged the region with MegaCam on the Canada-France-Hawai'i Telescope and present galaxy counts in photometric redshift bins. We rule out the existence of a 100Mpc radius spherical supervoid with underdensity delta=-0.3 at 0.5

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