PittsburghV1, France, Analysis, bibRecord, 000789

$XMM-Newton$ $\Omega$ project: III. Gas mass fraction shape in high redshift clusters

Identifieur interne : 000789 ( France/Analysis ); précédent : 000788; suivant : 000790

$XMM-Newton$ $\Omega$ project: III. Gas mass fraction shape in high redshift clusters

Auteurs : Rachida Sadat [France] ; Alain Blanchard [France] ; Sebastien Vauclair [France] ; David Lumb [Pays-Bas] ; James Bartlett [France] ; A. K. Romer [Royaume-Uni] ; Jean-Philippe Bernard [France] ; Michel Boer [France] ; Philippe Marty [France] ; Jukka Nevalainen [États-Unis] ; Douglas Burke [États-Unis] ; C. A. Collins [Royaume-Uni] ; Robert Nichol [États-Unis]

Source :

Astronomy and Astrophysics - A&A [ 0004-6361 ] ; 2005.

RBID : Hal:hal-00004520

English descriptors

mix :
- Cosmology:cosmological parameters, Galaxies: clusters: general-galaxies:intergalactic medium, X-rays: galaxies: clusters, dark matter.

Abstract

We study the gas mass fraction, $f_{\rm gas},$ behavior in $XMM-Newton$ $\Omega$ project. The typical $f_{\rm gas}$ shape of high redshift galaxy clusters follows the global shape inferred at low redshift quite well. This result is consistent with the gravitational instability picture leading to self similar structures for both the dark and baryonic matter. However, the mean $f_{\rm gas} in distant clusters shows some differences to local ones, indicating a departure from strict scaling. This result is consistent with the observed evolution in the luminosity-temperature relation. We quantitatively investigate this departure from scaling laws. Within the local sample we used, a moderate but clear variation of the amplitude of the gas mass fraction with temperature is found, a trend that weakens in the outer regions. These variations do not explain departure from scaling laws of our distant clusters. An important implication of our results is that the gas fraction evolution, a test of the cosmological parameters, can lead to biased values when applied at radii smaller than the virial radius. From our $XMM$ clusters, the apparent gas fraction at the virial radius is consistent with a non-evolving universal value in a high matter density model and not with a concordance.

Url:

https://hal.archives-ouvertes.fr/hal-00004520

DOI: 10.1051/0004-6361:20041192

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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<author><name sortKey="Collins, C A" sort="Collins, C A" uniqKey="Collins C" first="C. A." last="Collins">C. A. Collins</name>
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          <orgName type="acronym">LJMU</orgName>
          <date type="start">2016-10-28</date>
          <desc>            <address>              <addrLine>Liverpool, L3 2AJ</addrLine>
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            <ref type="url">https://www.ljmu.ac.uk/</ref>
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</hal:affiliation>
<country>Royaume-Uni</country>
</affiliation>
</author>
<author><name sortKey="Nichol, Robert" sort="Nichol, Robert" uniqKey="Nichol R" first="Robert" last="Nichol">Robert Nichol</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-6046" status="INCOMING">          <orgName>Physics Department</orgName>
          <desc>            <address>              <addrLine>Pittsburgh, PA 15213</addrLine>
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          <desc>            <address>              <addrLine>5000 Forbes Ave,  Pittsburgh, PA 15213</addrLine>
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<idno type="DOI">10.1051/0004-6361:20041192</idno>
<series><title level="j">Astronomy and Astrophysics - A&A</title>
<idno type="ISSN">0004-6361</idno>
<imprint><date type="datePub">2005</date>
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<profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>Cosmology:cosmological parameters</term>
<term>Galaxies: clusters: general-galaxies:intergalactic medium</term>
<term>X-rays: galaxies: clusters</term>
<term>dark matter</term>
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<front><div type="abstract" xml:lang="en">We study the gas mass fraction, $f_{\rm gas},$ behavior in $XMM-Newton$ $\Omega$ project. The typical $f_{\rm gas}$ shape of high redshift galaxy clusters follows the global shape inferred at low redshift quite well. This result is consistent with the gravitational instability picture leading to self similar structures for both the dark and baryonic matter. However, the mean $f_{\rm gas} in distant clusters shows some differences to local ones, indicating a departure from strict scaling. This result is consistent with the observed evolution in the luminosity-temperature relation. We quantitatively investigate this departure from scaling laws. Within the local sample we used, a moderate but clear variation of the amplitude of the gas mass fraction with temperature is found, a trend that weakens in the outer regions. These variations do not explain departure from scaling laws of our distant clusters. An important implication of our results is that the gas fraction evolution, a test of the cosmological parameters, can lead to biased values when applied at radii smaller than the virial radius. From our $XMM$ clusters, the apparent gas fraction at the virial radius is consistent with a non-evolving universal value in a high matter density model and not with a concordance.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
<li>Pays-Bas</li>
<li>Royaume-Uni</li>
<li>États-Unis</li>
</country>
<region><li>Angleterre</li>
<li>Provence-Alpes-Côte d'Azur</li>
<li>Sussex de l'Est</li>
</region>
<settlement><li>Brighton</li>
<li>Falmer</li>
<li>Marseille</li>
</settlement>
<orgName><li>Université d'Aix-Marseille</li>
<li>Université du Sussex</li>
</orgName>
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<tree><country name="France"><noRegion><name sortKey="Sadat, Rachida" sort="Sadat, Rachida" uniqKey="Sadat R" first="Rachida" last="Sadat">Rachida Sadat</name>
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<name sortKey="Bartlett, James" sort="Bartlett, James" uniqKey="Bartlett J" first="James" last="Bartlett">James Bartlett</name>
<name sortKey="Bernard, Jean Philippe" sort="Bernard, Jean Philippe" uniqKey="Bernard J" first="Jean-Philippe" last="Bernard">Jean-Philippe Bernard</name>
<name sortKey="Blanchard, Alain" sort="Blanchard, Alain" uniqKey="Blanchard A" first="Alain" last="Blanchard">Alain Blanchard</name>
<name sortKey="Boer, Michel" sort="Boer, Michel" uniqKey="Boer M" first="Michel" last="Boer">Michel Boer</name>
<name sortKey="Marty, Philippe" sort="Marty, Philippe" uniqKey="Marty P" first="Philippe" last="Marty">Philippe Marty</name>
<name sortKey="Vauclair, Sebastien" sort="Vauclair, Sebastien" uniqKey="Vauclair S" first="Sebastien" last="Vauclair">Sebastien Vauclair</name>
</country>
<country name="Pays-Bas"><noRegion><name sortKey="Lumb, David" sort="Lumb, David" uniqKey="Lumb D" first="David" last="Lumb">David Lumb</name>
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</country>
<country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Romer, A K" sort="Romer, A K" uniqKey="Romer A" first="A. K." last="Romer">A. K. Romer</name>
</region>
<name sortKey="Collins, C A" sort="Collins, C A" uniqKey="Collins C" first="C. A." last="Collins">C. A. Collins</name>
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<country name="États-Unis"><noRegion><name sortKey="Nevalainen, Jukka" sort="Nevalainen, Jukka" uniqKey="Nevalainen J" first="Jukka" last="Nevalainen">Jukka Nevalainen</name>
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<name sortKey="Burke, Douglas" sort="Burke, Douglas" uniqKey="Burke D" first="Douglas" last="Burke">Douglas Burke</name>
<name sortKey="Nichol, Robert" sort="Nichol, Robert" uniqKey="Nichol R" first="Robert" last="Nichol">Robert Nichol</name>
</country>
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$XMM-Newton$ $\Omega$ project: III. Gas mass fraction shape in high redshift clusters

$XMM-Newton$ $\Omega$ project: III. Gas mass fraction shape in high redshift clusters

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