Cool core clusters at high redshift: the unique case of WARPS J1415.1+3612

Details Cool core clusters at high redshift: the unique case of WARPS J1415.1+3612 Cool core clusters at high redshift: the unique case of WARPS J1415.1+3612

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cxo..prop.3027s&link_type=abstract

Chandra proposal ID #12800510

Computer Science

Scientific paper

We propose a deep (280 ks) ACIS-S Chandra observation of the cluster WARPS J1415+3612 at z=1.026. Our analysis of an archival 90 ksec ACIS-I observation revealed a peaked surface brightness profile, typical of cool-core clusters. Recent studies show that, while there is no evolution in the cool-core fraction up to z=0.4, there is an apparent deficit of very strong cool-core clusters out to z=1.3. In our study, WARPSJ1415 is shown to be the most prominent cool core at z>1. With the proposed observation we want to measure, for the first time at z=1, a high-quality temperature and metallicity profile for WARPSJ1415 in order to directly compare its properties with those of cool-core clusters at z<0.5. We will also derive accurate DM and density profiles to be compared with lensing studies.

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