Giant Cavities and Large Scale Shocks in the Distant Cluster MS0735.6+7421

We propose to obtain a deep image of the redshift z0.22 cluster MS0735.6+7421.The cluster.s enormous system of cavities and shocks are depositing 58E61erginto the ICM. Heating the cluster at a level of virgul1/2 keV per particle, this isenough energy to quench a 200 M0/yr cooling flow for several Gyr and to.preheat. the cluster. The image will be used to examine the impact of AGNheating on the LT relation, to constrain the temperature of the gas filling thecavities, to measure the temperature jump across the shock, and to search forevidence of earlier outbursts. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]