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28 March 2024
 
  » arxiv » astro-ph/0308006

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Cool Gas in Clusters of Galaxies
Megan Donahue ; G. Mark Voit ;
Date 31 Jul 2003
Journal 2003 Carnegie Observatory Astrophysics Series, Vol 3: Clusters of Galaxies: Probes of Cosmological Structure and Galaxy Evolution, eds. J. S. Mulchaey, A. Dressler and A. Oemler (Cambridge: Cambridge University Press)
Subject astro-ph
AbstractEarly X-ray observations suggested that the intracluster medium cools and condenses at the centers of clusters, leading to a cooling flow of plasma in the cluster core. The increased incidence of emission-line nebulosity, excess blue light, AGN activity, and molecular gas in the cores of clusters with short central cooling times seemed to support this idea. However, high-resolution spectroscopic observations from XMM-Newton and Chandra have conclusively ruled out simple, steady cooling flow models. We review the history of this subject, the current status of X-ray observations, and some recent models that have been proposed to explain why the core gas does not simply cool and condense.
Source arXiv, astro-ph/0308006
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