Orateur
Description
Mass is the most fundamental property of galaxy clusters however measuring it is still a challenge. Calibrating mass from intracluster medium observables such as the Sunyaev-Zel’dovich (SZ) effect is subject to uncertainty and biases because of the hydrostatic equilibrium assumption. On the other hand, merging cluster systems have been shown to exhibit radio emission which implies a link with disturbances from hydrostatic equilibrium. I will present work on studying deviations of galaxy cluster gas pressure profile from the average (universal) pressure profile using a sample of clusters with SZ effect data from the Arcminute Microkelvin Imager and Planck. These clusters have also been observed at low radio frequency with the Murchison Widefield Array allowing the investigation of links between gas pressure profile deviations and the presence of radio emission.
