Orateur
Description
We present a detailed study of the surface brightness profiles derived from a representative sample of 118 clusters selected via the Sunyaev-Zel'Dovich effect. These profiles represent an ideal tool to investigate the properties of the hot plasma filling the cluster volume. Studies of these profiles have been hampered by selection biases and faintness of the emission in the outskirts. We overcome these problems leveraging the recently accepted XMM-Heritage program CHEXMATE which observed an unbiased sample of 118 clusters drawn from the Planck catalogue in the redshift z=[0.1,0.7] and mass M=[2e14,2e15]Msun range with an unprecedented homogeneous data quality.
We investigate the shape of the surface brightness profiles and the origin of the scatter between them leveraging this exceptional dataset and by comparing them with a similar sample drawn from cosmological simulations.
