LoCuSS: A Joint XMM-Newton Subaru Study of Galaxy Cluster Scaling Relations

Details LoCuSS: A Joint XMM-Newton Subaru Study of Galaxy Cluster Scaling Relations LoCuSS: A Joint XMM-Newton Subaru Study of Galaxy Cluster Scaling Relations

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop..140z&link_type=abstract

XMM-Newton Proposal ID #06050009

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Z1693, Rxcj0201.7-0212, Rxcj2248.5-1606, A2219, A611, A697, A586, A750

Scientific paper

We propose a systematic high precision investigation of the cluster mass observable scaling relations, employing XMM data and our Subaru weak lensing data. The primary goal is to find out the best cluster mass proxy and investigate the behaviors of its scatter. Our preliminary results indicate that gas mass has lower scatter with total mass, compared to the product of gas mass and cluster temperature, Y_X. If those are confirmed, this will change the strategy for carrying out the X-ray cluster cosmology. Achieving a good control over the systematics have major implications for cluster cosmologists striving to measure the dark energy equation of state parameter, and should add a sharp multi-wavelength focus to investigations of the cluster physics. We require to observe 10 of 27 clusters (176ksec).

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