eROSITA XMM-Newton Legacy High Redshift Cluster Survey

We propose 880ks XMMNewton observations of the most massive, bright,highredshift galaxy clusters in the Universe detected in the first AllSkySurvey. The XMMNewton data will enable detailed studies of the density andtemperature structure of the intracluster medium (ICM) in these clusters ofgalaxies. Precise ICM mass measurements and temperature information will enhancethe pioneering eROSITA studies of the evolution of baryons in their deeppotential wells by constraining the properties of this crucial massive clusterpopulation. Furthermore, by combining the eROSITA data with the proposedXMMNewton followup observations, we will constrain the detailed structureformation process as a function of mass, redshift, and environment as well as understanding the (an)isotropy of the Universe. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]