A massive binary black-hole system in OJ 287 and a test of general relativity

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dc.authoridMarchev, Dragomir/0000-0001-6394-1121
dc.authoridNissinen, Markku/0000-0001-9209-8057
dc.authoridStachowski, Greg/0000-0003-1560-1039
dc.authoridVillforth, Carolin/0000-0002-8956-6654
dc.authoridLiakos, Alexios/0000-0002-0490-1469
dc.authoridOgloza, Waldemar/0000-0002-6293-9940
dc.authoridDrozdz, Marek/0000-0001-9587-1615
dc.contributor.authorValtonen, M. J.
dc.contributor.authorLehto, H. J.
dc.contributor.authorNilsson, K.
dc.contributor.authorHeidt, J.
dc.contributor.authorTakalo, L. O.
dc.contributor.authorSillanpaa, A.
dc.contributor.authorVillforth, C.
dc.date.accessioned2025-01-27T20:16:43Z
dc.date.available2025-01-27T20:16:43Z
dc.date.issued2008
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractTests of Einstein's general theory of relativity have mostly been carried out in weak gravitational fields where the space- time curvature effects are first- order deviations from Newton's theory(1-6). Binary pulsars(4) provide a means of probing the strong gravitational field around a neutron star, but strong- field effects may be best tested in systems containing black holes(7,8). Here we report such a test in a close binary system of two candidate black holes in the quasar OJ 287. This quasar shows quasi- periodic optical outbursts at 12- year intervals, with two outburst peaks per interval(9,10). The latest outburst occurred in September 2007, within a day of the time predicted by the binary black- hole model and general relativity(11). The observations confirm the binary nature of the system and also provide evidence for the loss of orbital energy in agreement ( within 10 per cent) with the emission of gravitational waves from the system(12). In the absence of gravitational wave emission the outburst would have happened 20 days later(13).
dc.identifier.doi10.1038/nature06896
dc.identifier.endpage853
dc.identifier.issn0028-0836
dc.identifier.issue7189
dc.identifier.pmid18421348
dc.identifier.scopus2-s2.0-42249087935
dc.identifier.scopusqualityQ1
dc.identifier.startpage851
dc.identifier.urihttps://doi.org/10.1038/nature06896
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21367
dc.identifier.volume452
dc.identifier.wosWOS:000255026000043
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherNature Publishing Group
dc.relation.ispartofNature
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectBl-Lacertae Objects
dc.subjectOj 287
dc.subjectAccretion Disk
dc.subjectModel
dc.subjectOutburst
dc.subjectPulsar
dc.subjectOj287
dc.subjectLens
dc.titleA massive binary black-hole system in OJ 287 and a test of general relativity
dc.typeArticle

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