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Baryons in the warm-hot intergalactic medium

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dc.contributor.authorDave, R
dc.contributor.authorCen, R
dc.contributor.authorOstriker, JP
dc.contributor.authorBryan, GL
dc.contributor.authorHernquist, L
dc.contributor.authorKatz, N
dc.contributor.authorWeinberg, DH
dc.contributor.authorNorman, ML
dc.contributor.authorO'Shea, B
dc.contributor.departmentUniversity of Massachusetts - Amherst
dc.date2023-09-22T23:46:10.000
dc.date.accessioned2024-04-26T08:27:50Z
dc.date.available2024-04-26T08:27:50Z
dc.date.issued2001-01-01
dc.description<p>This is the pre-published version harvested from ArXiv. The published version is located at <a href="http://iopscience.iop.org/0004-637X/552/2/473/">http://iopscience.iop.org/0004-637X/552/2/473/</a></p>
dc.description.abstractApproximately 30%-40% of all baryons in the present-day universe reside in a warm-hot intergalactic medium (WHIM), with temperatures in the range 105 < T < 107 K. This is a generic prediction from six hydrodynamic simulations of currently favored structure formation models having a wide variety of numerical methods, input physics, volumes, and spatial resolutions. Most of these warm-hot baryons reside in diffuse large-scale structures with a median overdensity around 10-30, not in virialized objects such as galaxy groups or galactic halos. The evolution of the WHIM is primarily driven by shock heating from gravitational perturbations breaking on mildly nonlinear, nonequilibrium structures such as filaments. Supernova feedback energy and radiative cooling play lesser roles in its evolution. WHIM gas may be consistent with observations of the 0.25 keV X-ray background without being significantly heated by nongravitational processes because the emitting gas is very diffuse. Our results confirm and extend previous work by Cen & Ostriker and Davé et al.
dc.description.pages473-483
dc.identifier.doihttps://doi.org/10.1086/320548
dc.identifier.urihttps://hdl.handle.net/20.500.14394/3021
dc.relation.ispartofASTROPHYSICAL JOURNAL
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1354&amp;context=astro_faculty_pubs&amp;unstamped=1
dc.source.issue2
dc.source.issue552
dc.source.statuspublished
dc.subjectcosmology : observations
dc.subjectintergalactic medium
dc.subjectlarge-scale structure of universe
dc.subjectmethods : numerical
dc.subjectAstrophysics and Astronomy
dc.titleBaryons in the warm-hot intergalactic medium
dc.typearticle
dc.typearticle
digcom.contributor.authorDave, R
digcom.contributor.authorCen, R
digcom.contributor.authorOstriker, JP
digcom.contributor.authorBryan, GL
digcom.contributor.authorHernquist, L
digcom.contributor.authorisAuthorOfPublication|email:nsk@astro.umass.edu|institution:University of Massachusetts - Amherst|Katz, N
digcom.contributor.authorWeinberg, DH
digcom.contributor.authorNorman, ML
digcom.contributor.authorO'Shea, B
digcom.identifierastro_faculty_pubs/355
digcom.identifier.contextkey1683043
digcom.identifier.submissionpathastro_faculty_pubs/355
dspace.entity.typePublication
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