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Model simulation for periodic double-peaked outbursts in blazar OJ 287: binary black hole plus lighthouse effect
Qian Shanjie
2015
Source PublicationResearch in Astronomy and Astrophysics
ISSN1674-4527
Volume15Issue:5Pages:687
AbstractThe mechanism of formation for double-peaked optical outbursts observed in blazar OJ 287 is studied. It is shown that they could be explained in terms of a lighthouse effect for superluminal optical knots ejected from the center of the galaxy that move along helical magnetic fields. It is assumed that the orbital motion of the secondary black hole in the supermassive binary black hole system induces the 12-year quasi-periodicity in major optical outbursts by the interaction with the disk around the primary black hole. This interaction between the secondary black hole and the disk of the primary black hole (e.g. tidal effects or magnetic coupling) excites or injects plasmons (or relativistic plasmas plus magnetic field) into the jet which form superluminal knots. These knots are assumed to move along helical magnetic field lines to produce the optical double-peaked outbursts by the lighthouse effect. The four double-peaked outbursts observed in 1972, 1983, 1995 and 2005 are simulated using this model. It is shown that such lighthouse models are quite plausible and feasible for fitting the double-flaring behavior of the outbursts. The main requirement may be that in OJ 287 there exists a rather long (similar to 40-60 pc) highly collimated zone, where the lighthouse effect occurs.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/39773
Collection中国科学院国家天文台
Affiliation中国科学院国家天文台
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian Shanjie. Model simulation for periodic double-peaked outbursts in blazar OJ 287: binary black hole plus lighthouse effect[J]. Research in Astronomy and Astrophysics,2015,15(5):687.
APA Qian Shanjie.(2015).Model simulation for periodic double-peaked outbursts in blazar OJ 287: binary black hole plus lighthouse effect.Research in Astronomy and Astrophysics,15(5),687.
MLA Qian Shanjie."Model simulation for periodic double-peaked outbursts in blazar OJ 287: binary black hole plus lighthouse effect".Research in Astronomy and Astrophysics 15.5(2015):687.
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