Mathematics – Logic
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21840815n&link_type=abstract
American Astronomical Society, AAS Meeting #218, #408.15; Bulletin of the American Astronomical Society, Vol. 43, 2011
Mathematics
Logic
Scientific paper
We present a new galaxy cluster-finding algorithm that uses information from both galaxy and Sunyaev-Zel'dovich surveys. This new joint-finder uses the full information from optical galaxy catalogues and mm-wave sky maps to probabilistically and robustly detect clusters down to lower masses than possible cluster finders in a single waveband.
The promise of galaxy clusters as cosmological probes will reach another milestone with the execution of the Dark Energy Survey (DES), which is expected to find at least hundreds of thousands of galaxy clusters in optical wavebands. The South Pole Telescope (SPT), already online, and of overlapping coverage with DES, is already discovering clusters via the Sunyaev-Zel'dovich (SZ) signal, but only above a high mass threshold. In order to probe the lower ends of the cluster mass function, we take advantage of fundamental signals from both kinds of surveys and combine them into joint-signal maps which can make smaller clusters more detectible. We demonstrate our cluster-finder in simulations that include state-of-the-art SPT- and DES-like noise in order to encapsulate the full effect of challenges related to on-sky observations. The authors would like to thank the Michigan AGEP Fellowship.
Jeff M.
Nord Brian
No associations
LandOfFree
Crossing the Streams: A Joint Sunyaev-Zeldovich/Optical Finder for Galaxy Cluster Surveys does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Crossing the Streams: A Joint Sunyaev-Zeldovich/Optical Finder for Galaxy Cluster Surveys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crossing the Streams: A Joint Sunyaev-Zeldovich/Optical Finder for Galaxy Cluster Surveys will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1743420