1206.6603 (Alessandro Baldi et al.)

Self-similarity of temperature profiles in distant galaxy clusters: the quest for a Universal law    [PDF]

Alessandro Baldi, Stefano Ettori, Silvano Molendi, Fabio Gastaldello

We present the XMM-Newton temperature profiles of 12 bright clusters of galaxies at 0.4=0.6 as NCC clusters. The profiles of CC and NCC clusters differ mainly in the central regions, with the latters exhibiting a marginally flatter central profile. A significant dependence of the temperature profiles on the pseudo-entropy ratio sigma is detected by fitting a function of both r and sigma, showing an indication that the outer part of the profiles becomes steeper for higher values of sigma (i.e. transitioning towards the NCC clusters). No significant evidence of redshift evolution could be found within the redshift range sampled by our clusters (0.40.4 has been attempted, as we were able to define the closest possible relation to a Universal law for the temperature profiles of galaxy clusters at 0.1View original: http://arxiv.org/abs/1206.6603