Heating rate profiles in clusters of galaxies

2; 2= University of Southampton; 3); 3= Univsersity of Southampton; Astronomy; Christian Kaiser (2); Edward Pope (1; Georgi Pavlovski (2); Hans Fangohr (3) (1= University of Leeds; school of engineering sciences)

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Heating rate profiles in clusters of galaxies

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arxiv astro-ph/0702683 v1 submitted 2007-02-26 astro-ph

Heating rate profiles in clusters of galaxies

Edward Pope (1 , 2 , 3) , Christian Kaiser (2) , Georgi Pavlovski (2) , Hans Fangohr (3) (1= University of Leeds , School of Physics , Astronomy

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2= University of Southampton 3= Univsersity of Southampton school of engineering sciences)

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classification astro-ph

keywords clustersconductionloweroutflowsprofilesthermalcavitycomparing

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The results of hydrodynamic simulations of the Virgo and Perseus clusters suggest that thermal conduction is not responsible for the observed temperature and density profiles. As a result it seems that thermal conduction occurs at a much lower level than the Spitzer value. Comparing cavity enthalpies to the radiative losses within the cooling radius for seven clusters suggests that some clusters are probably heated by sporadic, but extremely powerful, AGN outflows interspersed between more frequent but lower power outflows.

Heating rate profiles in clusters of galaxies

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