Monday, Jan 09, 2012, 2:13 PM - 2:26 PM
Mapping of Dark Matter in Large Scale Structures
Ludovic Van Waerbeke
, CFHTLenS collaboration
University of British Columbia, Canada.
We present the largest mass maps ever made with gravitational lensing. The maps unveil the distribution of dark matter in cosmic structures over the four patches of CFHT Lensing Survey (CFHTLenS) covering 155 square degrees. Some structures that span a few degrees in extension are clearly visible on the maps. The mass maps are for the first time used to probe cosmological parameters. A comparison with the projected mass as expected from the stellar masses of foreground galaxies and clusters will also be discussed.
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