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OJ287 taken to pieces: The origin of a precessing and rotating jet

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dc.contributor.author Aller M.
dc.contributor.author Aller H.
dc.contributor.author Eckart A.
dc.contributor.author Nilsson K.
dc.contributor.author Arévalo P.
dc.contributor.author Cuadra J.
dc.contributor.author Witzel A.
dc.date.accessioned 2019-01-22T20:47:48Z
dc.date.available 2019-01-22T20:47:48Z
dc.date.issued 2018
dc.identifier.issn 1742-6588
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/148825
dc.description.abstract © Published under licence by IOP Publishing Ltd. OJ287 is the best candidate active galactic nucleus for hosting a supermassive binary black hole at very close separation, corresponding to the orbital period of the order of ∼9 yr. We studied the pc-scale jet dynamics in 118 Very Long Baseline Array (VLBA) observations at 15 GHz covering the time between Apr. 1995 and Jan. 2017. To our knowledge, this is the first time, that the kinematics of the Blandford-Znajek jet (originating in the ergosphere of a rotating black hole) and jet sheath (originating from the accretion disk) are seen and traced in observations. We also find that the OJ287 radio jet is rotating and precessing. The jet dynamics as well as the flux-density light curves can be understood in terms of geometrical effects. A binary black hole model can explain the time scale of the precessing motion. Lense-Thirring precession of an accretion disc surrounding a single black hole is consistent with the time scale as well.
dc.relation.ispartofseries Journal of Physics: Conference Series
dc.title OJ287 taken to pieces: The origin of a precessing and rotating jet
dc.type Conference Paper
dc.relation.ispartofseries-issue 1
dc.relation.ispartofseries-volume 942
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS17426588-2018-942-1-SID85040772366


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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