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.
Cite
@article{arxiv.astro-ph/0309543,
title = {On the Intracluster Medium in Cooling Flow & Non-Cooling Flow Clusters},
author = {Arif Babul and Ian G. McCarthy and Greg B. Poole},
journal= {arXiv preprint arXiv:astro-ph/0309543},
year = {2009}
}
Comments
4 pages, to appear in the proceedings of the "Multiwavelength Cosmology" Conference held in Mykonos, Greece, June 2003, ed. M. Plionis (Kluwer)