Entropy in low mass galaxy clusters out to moderate radii

Details Entropy in low mass galaxy clusters out to moderate radii Entropy in low mass galaxy clusters out to moderate radii

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1787l&link_type=abstract

Chandra Proposal ID #06800913

Computer Science

Chandra Proposal Id #06800913

Scientific paper

In simple models of structure formation, involving gravitational collapse and shock heating, the properties of galaxy clusters are expected to follow simple scaling relations dependent only on system mass. Observations show deviations from these scaling relations, which are usually attributed to the presence of excess entropy, so theoretical models were devised to explain this. We can discriminate between competing models by determining the radial entropy profiles out to several core radii, for the clusters we proposed to observe. We will analyse these observation in conjunction with archive Chandra data for rich clusters and XMM-Newton observations of groups, thereby constraining the models over a large mass range.

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