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Valtonen, M. J.; Zola, S.; Ciprini, S.; Gopakumar, A.; Matsumoto, K.; Sadakane, K.; Kidger, M.; Gazeas, K.; Nilsson, K.; Berdyugin, A.; Piirola, V.; Jermak, H.; Baliyan, K. S.; Alicavus, F.; Boyd, D.; Campas Torrent, M.; Campos, F.; Carrillo Gomez, J.; Caton, D. B.; Chavushyan, V.; Chavushyan, V.
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"> <dc:creator>Valtonen, M. J.</dc:creator> <dc:creator>Zola, S.</dc:creator> <dc:creator>Ciprini, S.</dc:creator> <dc:creator>Gopakumar, A.</dc:creator> <dc:creator>Matsumoto, K.</dc:creator> <dc:creator>Sadakane, K.</dc:creator> <dc:creator>Kidger, M.</dc:creator> <dc:creator>Gazeas, K.</dc:creator> <dc:creator>Nilsson, K.</dc:creator> <dc:creator>Berdyugin, A.</dc:creator> <dc:creator>Piirola, V.</dc:creator> <dc:creator>Jermak, H.</dc:creator> <dc:creator>Baliyan, K. S.</dc:creator> <dc:creator>Alicavus, F.</dc:creator> <dc:creator>Boyd, D.</dc:creator> <dc:creator>Campas Torrent, M.</dc:creator> <dc:creator>Campos, F.</dc:creator> <dc:creator>Carrillo Gomez, J.</dc:creator> <dc:creator>Caton, D. B.</dc:creator> <dc:creator>Chavushyan, V.</dc:creator> <dc:creator>Chavushyan, V.</dc:creator> <dc:date>2016-01-01</dc:date> <dc:description>OJ 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> <dc:identifier>https://aperta.ulakbim.gov.trrecord/59659</dc:identifier> <dc:identifier>oai:zenodo.org:59659</dc:identifier> <dc:rights>info:eu-repo/semantics/openAccess</dc:rights> <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights> <dc:source>ASTROPHYSICAL JOURNAL LETTERS 819(2)</dc:source> <dc:title>PRIMARY BLACK HOLE SPIN IN OJ 287 AS DETERMINED BY THE GENERAL RELATIVITY CENTENARY FLARE</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> <dc:type>publication-article</dc:type> </oai_dc:dc>
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