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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 | Abstract: | Early 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 | Services: | Forum | Review | PDF | Favorites |
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