The dark matter distribution in 0.9 < z < 1.1 clusters

We propose to measure the mass profiles of a complete sample of massive galaxyclusters at 0.9< z< 1.15, with a precision similar to that currently obtainedfor local objects. We will assess the evolution of the dark matter concentrationat cluster scales, a critical test of theoretical scenario of structureformation. This data set will also constrain the evolution of fundamentalmassproxy relations and the evolution of the gas entropy and pressure profilesin the high mass regime, a test of gravitational gas heating truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]