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On the Intracluster Medium in Cooling Flow & Non-Cooling Flow Clusters

Arif Babul·Ian G. McCarthy·Greg B. Poole
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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.

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Arif Babul, Ian G. McCarthy, Greg B. Poole. 2003-09-19. On the Intracluster Medium in Cooling Flow & Non-Cooling Flow Clusters. https://arxiv.org/abs/astro-ph/0309543

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