2XMM J083026+524133: The most X-ray luminous cluster at redshift 1

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dc.creatorLamer, G.
dc.creatorHoeft, M.
dc.creatorKohnert, J.
dc.creatorSchwope, A.
dc.creatorStorm, J.
dc.date2008-05-25
dc.date2008-08-25
dc.date.accessioned2026-07-07T09:57:52Z
dc.date.available2026-07-07T09:57:52Z
dc.descriptionIn the distant universe X-ray luminous clusters of galaxies are rare objects. Large area surveys are therefore needed to probe the high luminosity end of the cluster population at redshifts z >= 1. We correlated extended X-ray sources from the second XMM-Newton source catalogue (2XMM) with the SDSS in order to identify new clusters of galaxies. Distant cluster candidates in empty SDSS fields were imaged in the R and z bands with the Large Binocular Telescope. We extracted the X-ray spectra of the cluster candidates and fitted thermal plasma models to the data. We determined the redshift 0.99 +-0.03 for 2XMM J083026+524133 from its X-ray spectrum. With a bolometric luminosity of 1.8 x 10^45 erg/sec this is the most X-ray luminous cluster at redshifts z >= 1. We measured a gas temperature of 8.2 +- 0.9 keV and and estimate a cluster mass M(500) = 5.6 x 10^14 M(solar). The optical imaging revealed a rich cluster of galaxies.
dc.descriptionNew version, as accepted for publication in Astronomy & Astrophysics
dc.identifierhttps://arxiv.org/abs/0805.3817
dc.identifierhttp://arxiv.org/abs/0805.3817
dc.identifierA&A 487, L33-L36 (2008)
dc.identifierdoi:10.1051/00046361:200810255
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/167501
dc.subjectAstrophysics
dc.title2XMM J083026+524133: The most X-ray luminous cluster at redshift 1
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