The Creation of the Intracluster Medium in High-z Galaxy Clusters

We propose to observe a newly discovered galaxy cluster around the radio galaxy3C 210 at z1.17. We intend to obtain a 20 Ksec ACIS exposure to identify pointsources, which can severely bias measurements of extended emission in highzclusters, and to study the radio galaxy itself. We also ask to obtain a 100 ksEPIC exposure to measure the properties of the intracluster medium including itsXray temperature and morphology. These observations will help to understand theway that galaxy clusters create an ICM as they evolve from the protoclustersrecently discovered at 2<z<4, and to act as a pathfinder for the futureexploitation of high redshift galaxy clusters in understanding dark energy. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]