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XMM-Newton unveils the complex iron K alpha region of Mrk 279

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dc.contributorVirginia Techen
dc.contributor.authorCostantini, E.en
dc.contributor.authorKaastra, J. S.en
dc.contributor.authorKorista, K. T.en
dc.contributor.authorEbrero, J.en
dc.contributor.authorArav, Nahumen
dc.contributor.authorKriss, G. A.en
dc.contributor.authorSteenbrugge, K. C.en
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-05en
dc.date.accessioned2013-12-06T13:58:47Zen
dc.date.available2013-12-06T13:58:47Zen
dc.date.issued2010-03-04en
dc.description.abstractWe present the results of a similar to 160 ks-long XMM-Newton observation of the Seyfert 1 galaxy Mrk 279. The spectrum shows evidence of both broad and narrow emission features. The FeK alpha line may be equally well explained by a single broad Gaussian (FWHM similar to 10 000 km s(-1)) or by two components: an unresolved core plus a very broad profile (FWHM similar to 14 000 km s(-1)). For the first time we quantified, via the "locally optimally emitting cloud" model, the contribution of the broad line region (BLR) to the absolute luminosity of the broad component of the FeK alpha at 6.4 keV. We find that the contribution of the BLR is only similar to 3%. In the two-line component scenario, we also evaluated the contribution of the highly ionized gas component, which produces the Fe XXVI line in the iron K region. This contribution to the narrow core of the FeK alpha line is marginal <0.1%. Most of the luminosity of the unresolved, component of FeK alpha may come from the obscuring torus, while the very-broad associated component may come from the accretion disk. However, models of reflection by cold gas are difficult to test because of the limited energy band. The Fe XXVI line at 6.9 keV is consistent to be produced in a high column density (N(H) similar to 10(23) cm(-2)), extremely ionized (log xi similar to 5.5-7) gas. This gas may be a highly ionized outer layer of the torus.en
dc.description.sponsorshipSpace Research Organization of The Netherlandsen
dc.identifier.citationCostantini, E. ; Kaastra, J. S. ; Korista, K. ; et al., Mar.-Apr. 2010. “XMM-Newton unveils the complex iron K alpha region of Mrk 279,” ASTRONOMY & ASTROPHYSICS 512:A25. DOI: 10.1051/0004-6361/200912555en
dc.identifier.doihttps://doi.org/10.1051/0004-6361/200912555en
dc.identifier.issn0004-6361en
dc.identifier.urihttp://hdl.handle.net/10919/24431en
dc.identifier.urlhttp://www.aanda.org/articles/aa/pdf/2010/04/aa12555-09.pdfen
dc.language.isoen_USen
dc.publisherEDP Sciencesen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectgalaxies: individual: Mrk 279en
dc.subjectgalaxies: Seyferten
dc.subjectquasars: absorptionen
dc.subjectlinesen
dc.subjectquasars: emission linesen
dc.subjectX-rays: galaxiesen
dc.subjectactive galactic nucleien
dc.subjectx-ray-emissionen
dc.subjectray/ultraviolet observingen
dc.subjectcampaignen
dc.subjectoptimally emitting cloudsen
dc.subjectaccretion disken
dc.subjectblack-holeen
dc.subjectseyfert-1 galaxiesen
dc.subjectphysical conditionsen
dc.subjectchandra-letgsen
dc.subjectline regionen
dc.subjectAstronomy & Astrophysicsen
dc.titleXMM-Newton unveils the complex iron K alpha region of Mrk 279en
dc.title.serialAstronomy & Astrophysicsen
dc.typeArticle - Refereeden

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