Equilibrium Models of Galaxy Clusters with Cooling, Heating, and Conduction

© 2003. The American Astronomical Society. All rights reserved. Printed in U.S.A.
, , Citation M. Brüggen 2003 ApJ 593 700 DOI 10.1086/376734

0004-637X/593/2/700

Abstract

It is generally argued that most clusters of galaxies host cooling flows in which radiative cooling in the center causes a slow inflow. However, recent observations by Chandra and XMM conflict with the predicted cooling flow rates. Among other mechanisms, heating by a central active galactic nucleus and thermal conduction have been invoked in order to account for the small mass deposition rates. Here we present a family of hydrostatic models for the intracluster medium where radiative losses are exactly balanced by thermal conduction and heating by a central source. We describe the features of this simple model and fit its parameters to the density and temperature profiles of Hydra A.

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10.1086/376734