Galaxy Counts on the CMB Cold Spot

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

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21536204g&link_type=abstract

American Astronomical Society, AAS Meeting #215, #362.04; Bulletin of the American Astronomical Society, Vol. 42, p.550

Astronomy and Astrophysics

Astronomy

Scientific paper

We measured the galaxy distribution over the Cold Spot to test if this anomalously cool region of the WMAP microwave sky can be attributed to a supervoid. Large-scale voids at low redshift imprint cold spots on the CMB through the Integrated Sachs-Wolfe effect and could explain the Spot. We imaged six square degrees over the region with MegaCam on CFHT and studied the photometric redshift distribution of galaxies to z=1.

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