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dc.contributor.authorSchawinski, K.
dc.contributor.authorVirani, S.
dc.contributor.authorUrry, C.M.
dc.contributor.authorNatarajan, P.
dc.contributor.authorCoppi, P.
dc.contributor.authorEvans, D.A.
dc.contributor.authorKeel, W.C.
dc.contributor.authorManning, A.
dc.contributor.authorLintott, C.J.
dc.contributor.authorKaviraj, S.
dc.contributor.authorBamford, S.P.
dc.contributor.authorJózsa, G.I.G.
dc.contributor.authorGarrett, M.
dc.contributor.authorVan Arkel, H.
dc.contributor.authorGay, P.
dc.contributor.authorFortson, L.
dc.date.accessioned2013-10-30T12:01:00Z
dc.date.available2013-10-30T12:01:00Z
dc.date.issued2010-11-20
dc.identifier.citationSchawinski , K , Virani , S , Urry , C M , Natarajan , P , Coppi , P , Evans , D A , Keel , W C , Manning , A , Lintott , C J , Kaviraj , S , Bamford , S P , Józsa , G I G , Garrett , M , Van Arkel , H , Gay , P & Fortson , L 2010 , ' The sudden death of the nearest quasar ' , Astrophysical Journal Letters , vol. 724 , no. 1 , L30 . https://doi.org/10.1088/2041-8205/724/1/L30
dc.identifier.issn2041-8205
dc.identifier.otherPURE: 2066303
dc.identifier.otherPURE UUID: 8ea0769f-7c2c-4c2e-90e2-907a69aa0daf
dc.identifier.otherScopus: 78650231867
dc.identifier.urihttp://hdl.handle.net/2299/11928
dc.description.abstractGalaxy formation is significantly modulated by energy output from supermassive black holes at the centers of galaxies which grow in highly efficient luminous quasar phases. The timescale on which black holes transition into and out of such phases is, however, unknown. We present the first measurement of the shutdown timescale for an individual quasar using X-ray observations of the nearby galaxy IC 2497, which hosted a luminous quasar no more than 70,000 years ago that is still seen as a light echo in "Hanny's Voorwerp," but whose present-day radiative output is lower by at least two, and more likely by over four, orders of magnitude. This extremely rapid shutdown provides new insight into the physics of accretion in supermassive black holes and may signal a transition of the accretion disk to a radiatively inefficient state.en
dc.language.isoeng
dc.relation.ispartofAstrophysical Journal Letters
dc.rightsOpen
dc.titleThe sudden death of the nearest quasaren
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=78650231867&partnerID=8YFLogxK
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeSubmitted Version
dcterms.dateAccepted2010-11-20
rioxxterms.versionSMUR
rioxxterms.versionofrecordhttps://doi.org/10.1088/2041-8205/724/1/L30
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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