Radio source ageing and the quenching of cooling cores in clusters

We propose to complete the highquality Xray observations of a sample of 35intermediateredshift bright galaxy clusters by observing 4 with XMM. The sampleis unbiased in Xray morphology and radiosource content, and is of sufficientsize to permit us to address the extent to which cooling flows are halted byenergy injected by radio sources, and if the dynamical state of the cluster gascorrelates with the radio source physical state. This will be achieved bycomparing the Xrayderived temperature, entropy and pressure structures withenergy contents, ages and distributions of the radiosources within theclusters. In addition, complementary observations of SZ effect and weak lensingwill allow us to compare 3 mass estimation methods for a statistical galaxy cluster sample. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]