Multiwavelength Cosmology pp 247-250 | Cite as
On the Intracluster Medium in Cooling Flow & Non-Cooling Flow Clusters
Abstract
Recent X-ray observations have highlighted clusters that lack entropy cores. At first glance, these results appear to invalidate the preheated ICM models. We show that a self-consistent preheating model, which factors in the effects of radiative cooling, is in excellent agreement with the observations. Moreover, the model naturally explains the intrinsic scatter in the L-T relation, with “cooling flow” and “non-cooling flow” systems corresponding to mildly and strongly preheated systems, respectively. We discuss why preheating ought to be favoured over merging as a mechanism for the origin of “non-cooling flow” clusters.
Keywords
Intracluster Medium Sunyaev-Zel’dovich Effect X-rays Entropy ProfllesPreview
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