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Yael Raveh (Selected Topics in Astrophysics Seminar, Spring 2014) X-ray Spectroscopy of Cooling Clusters 02-July-14 1 X-ray Spectroscopy of Cooling Clusters

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Outline 02-July-14 X-ray Spectroscopy of Cooling Clusters 2 Introduction : Physics of the ICM An ionized plasma coronal approximation Radiation emission processes MHD equations What are cooling flows? Means of observation; X-ray spectra of cooling clusters The cooling flow problem Some of current alternative models

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Clusters of Galaxies 02-July-14 X-ray Spectroscopy of Cooling Clusters 3 Total masses of 10 14 -10 15 16% gas, 13% in ICM. 84% dark matter Gas densities : 10 -1 -10 -3 cm -3 X-ray luminosities range : 10 43 -10 46 erg s -1

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