Heating of the intracluster medium by quasar outflows

We study the possibility of quasar outflows in clusters and groups of galaxies heating the intracluster gas in order to explain the recent observation of excess entropy in this gas. We show that radio galaxies alone cannot provide the energy required to explain the observations but the inclusion of...

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Bibliographic Details
Published inJournal of astrophysics and astronomy Vol. 23; no. 1-2; pp. 101 - 105
Main Authors Roychowdhury, Suparna, Nath, Biman B.
Format Journal Article
LanguageEnglish
Published Bangalore Springer Nature B.V 01.03.2002
Subjects
Astrophysics
Entropy
Galactic clusters
Galaxies
Heating
Outflow
Quasars
Radio galaxies
Red shift
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ISSN0250-6335
0973-7758
DOI10.1007/BF02702472

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Summary:We study the possibility of quasar outflows in clusters and groups of galaxies heating the intracluster gas in order to explain the recent observation of excess entropy in this gas. We show that radio galaxies alone cannot provide the energy required to explain the observations but the inclusion of Broad Absorption Line (BAL) outflows can do so, and that in this scenario most of the heating takes place at z 1-4, the "preheating" epoch being at a lower redshift for lower mass clusters.
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ISSN:0250-6335
0973-7758
DOI:10.1007/BF02702472