PRIMARY BLACK HOLE SPIN IN OJ 287 AS DETERMINED BY THE GENERAL RELATIVITY CENTENARY FLARE

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dc.authoridHarmanen, Jussi/0000-0001-8242-4090
dc.authoridKvammen, Andreas/0000-0002-5511-4473
dc.authoridDrozdz, Marek/0000-0001-9587-1615
dc.authoridDimitrov, Dinko/0000-0002-1667-5868
dc.authoridOgloza, Waldemar/0000-0002-6293-9940
dc.authoridPiirola, Vilppu/0000-0003-0186-206X
dc.authoridPerri, Matteo/0000-0003-3613-4409
dc.contributor.authorValtonen, M. J.
dc.contributor.authorZola, S.
dc.contributor.authorCiprini, S.
dc.contributor.authorGopakumar, A.
dc.contributor.authorMatsumoto, K.
dc.contributor.authorSadakane, K.
dc.contributor.authorKidger, M.
dc.date.accessioned2025-01-27T20:44:00Z
dc.date.available2025-01-27T20:44:00Z
dc.date.issued2016
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractOJ 287 is a quasi-periodic quasar with roughly 12 year optical cycles. It displays prominent outbursts that are predictable in a binary black hole model. The model predicted a major optical outburst in 2015 December. We found that the outburst did occur within the expected time range, peaking on 2015 December 5 at magnitude 12.9 in the optical R-band. Based on Swift/XRT satellite measurements and optical polarization data, we find that it included a major thermal component. Its timing provides an accurate estimate for the spin of the primary black hole, chi = 0.313 +/- 0.01. The present outburst also confirms the established general relativistic properties of the system such as the loss of orbital energy to gravitational radiation at the 2% accuracy level, and it opens up the possibility of testing the black hole no-hair theorem with 10% accuracy during the present decade.
dc.description.sponsorshipGACR [13-33324 S]; Academy of Finland [1274931]; NSF [AST-1211916]; NASA [NNX12AF12G]; TABASGO Foundation; Christopher R. Redlich Fund; TUBITAK [10CT60-76]; [NCN 2013/09/B/ST9/00599]; [DEC-2011/03/D/ST9/00656]; STFC [ST/M003035/1] Funding Source: UKRI; Direct For Mathematical & Physical Scien; Division Of Astronomical Sciences [1517030] Funding Source: National Science Foundation; NASA [NNX12AF12G, 75114] Funding Source: Federal RePORTER
dc.description.sponsorshipThe Swift gamma-ray burst explorer mission is part of NASA's medium explorer (MIDEX) program, led by NASA with participation of Italy and the UK. We would like to thank the Swift team for making these observations possible, in particular D. Malesani as the Swift Observatory Duty Scientist. The authors acknowledge support by the following grants: NCN 2013/09/B/ST9/00599 (S.Z.) and. DEC-2011/03/D/ST9/00656 (M.Z.),. GACR 13-33324 S. (R.H.), and Academy of Finland grant No. 1274931 (P.P.). A.V.F. and W.-K.Z. are grateful for financial assistance from NSF grant AST-1211916, NASA grant NNX12AF12G, the TABASGO Foundation, and the Christopher R. Redlich Fund. We extend our thanks to TUBITAK for partial support in using the T60 telescope with project number 10CT60-76. We are grateful to S. Masda, D. Wagner, T. Zehe, J. Greif, and H. Gilbert for their help in carrying out some of the observations taken at the University Observatory Jena, which is operated by the Astrophysical Institute of the Friedrich-Schiller-University.
dc.identifier.doi10.3847/2041-8205/819/2/L37
dc.identifier.issn2041-8205
dc.identifier.issn2041-8213
dc.identifier.issue2
dc.identifier.scopus2-s2.0-84961133222
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3847/2041-8205/819/2/L37
dc.identifier.urihttps://hdl.handle.net/20.500.12428/24447
dc.identifier.volume819
dc.identifier.wosWOS:000371788300021
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartofAstrophysical Journal Letters
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectblack hole physics
dc.subjectquasars: general
dc.subjectquasars: individual (OJ 287)
dc.subjectquasars: supermassive black holes
dc.titlePRIMARY BLACK HOLE SPIN IN OJ 287 AS DETERMINED BY THE GENERAL RELATIVITY CENTENARY FLARE
dc.typeArticle

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