LoCuSS: completing a volume limited sample of massive clusters with XMM-Subaru

Details LoCuSS: completing a volume limited sample of massive clusters with XMM-Subaru LoCuSS: completing a volume limited sample of massive clusters with XMM-Subaru

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop...78z&link_type=abstract

XMM-Newton Proposal ID #06520104

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Rxcj1203.2-2131, Rxcj1212.3-1816, Rxcj2102.1-2431, Rxcj0003.1-0605

Scientific paper

An XMM/Subaru study of 12 clusters shows that Mgas is an excellent mass proxy, with its scatter less than 3+/-6%. However the X-ray to weak lensing mass ratio is morphology dependent, and sensitive to inclusion/exclusion of individual clusters. A complete volume limited sample of 54 clusters with high quality X-ray and weak-lensing data will deliver the definitive constraints on mass bias with respect to morphology that are essential for proper control of systematics in forthcoming X-ray cluster cosmology programs aiming to measure the dark energy equation of state parameter w, and for any program wishing to add a sharp, multi-wavelength focus to investigations of cluster physics. Archival XMM and/or Chandra data exist for 50/54 clusters; we therefore request totaling 110 net ks for 4 clusters.

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