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Heating of the intergalactic medium as a result of structure formation

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dc.contributor.authorNath, Biman B
dc.contributor.authorSilk, Joseph
dc.date.accessioned2006-11-07T09:37:41Z
dc.date.available2006-11-07T09:37:41Z
dc.date.issued2001-10
dc.descriptionOpen Accessen
dc.description.abstractWe estimate the heating of the intergalactic medium as a result of shocks arising from structure formation. The heating of the gas outside the collapsed regions, with small overdensities [(nb/nb)<<200] is considered here, with the aid of a Zel'dovich approximation. We estimate the equation of state of this gas, relating the density to its temperature and its evolution in time, considering the shock heating caused by 1σ density peaks as being the most dominant. We also estimate the mass fraction of gas above a given temperature as a function of redshift. We find that the baryon fraction above 106K at z=0 is ~10 per cent. We estimate the integrated Sunyaev-Zel'dovich distortion from this gas at present epoch to be of the order of 10-6.en
dc.format.extent8338 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2001, Vol.327, pL5-L9.en
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/2289/1507
dc.language.isoenen
dc.publisherBlackwell Publishing for the Royal Astronomical Societyen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?2001MNRAS.327L...5Nen
dc.relation.urihttp://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2001MNRAS.327L...5N&data_type=PDF_HIGH&type=PRINTER&filetype=.pdfen
dc.rights(2001) Royal Astronomical Societyen
dc.subjectGALAXIES: FORMATIONen
dc.subjectINTERGALACTIC MEDIUMen
dc.subjectCOSMOLOGY: THEORYen
dc.subjectLARGE-SCALE STRUCTURE OF UNIVERSEen
dc.titleHeating of the intergalactic medium as a result of structure formationen
dc.typeArticleen

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