Entropy of the intracluster medium at high redshift

Nath, Biman B.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1514

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DC Field	Value	Language
dc.contributor.author	Nath, Biman B.	-
dc.date.accessioned	2006-11-10T05:11:03Z	-
dc.date.available	2006-11-10T05:11:03Z	-
dc.date.issued	2004-09	-
dc.identifier.citation	Monthly Notices of the Royal Astronomical Society, 2004, Vol.353, Issue 3, p941-946.	en
dc.identifier.issn	0035-8711	-
dc.identifier.uri	http://hdl.handle.net/2289/1514	-
dc.description	Restricted Access. An open access version is available at arXiv.org	en
dc.description.abstract	Recent observations of the entropy of the intracluster medium (ICM) at high redshift are not consistent with a redshift-independent entropy floor. To interpret these observations, we study models in which the entropy of ICM is enhanced at the epoch of cluster formation (zf), which then passively evolves as a result of radiative cooling until the epoch of observation (zo). We confirm that a z-independent entropy floor is incompatible with the observations. We find that models in which energy deposition into the ICM increases with redshift [scaling approximately as ~M0.6cl(1 +zf)2.2] are consistent with observations of low- and high-redshift clusters. Possible sources of such non-gravitational heating are briefly discussed.	en
dc.format.extent	8338 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	Blackwell Publishing for the Royal Astronomical Society	en
dc.relation.uri	http://arxiv.org/abs/astro-ph/0406451	en
dc.relation.uri	http://dx.doi.org/10.1111/j.1365-2966.2004.08124.x	en
dc.rights	(2004) Royal Astronomical Society	en
dc.subject	galaxies: clusters: general	en
dc.subject	intergalactic medium	en
dc.subject	cosmology: theory	en
dc.subject	X-rays: galaxies: clusters	en
dc.title	Entropy of the intracluster medium at high redshift	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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