| A Possible Periodicity in the Radio Light Curves of 3C 454.3 |
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| 引用本文： | Shan-Jie Qian N. A. Kudryavtseva S. Britzen T. E Krichbaum Long Gao A. Witzel J. A. Zensus M. E Aller H. D. Aller Xi-Zhen Zhang. A Possible Periodicity in the Radio Light Curves of 3C 454.3[J]. 中国天文和天体物理学报, 2007, 7(3): 364-374 |
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| 作者姓名： | Shan-Jie Qian N. A. Kudryavtseva S. Britzen T. E Krichbaum Long Gao A. Witzel J. A. Zensus M. E Aller H. D. Aller Xi-Zhen Zhang |
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| 作者单位： | [1]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 [2]Max-Planck-institut ftir Radioastronomie, Auf dem HUgel 69, 53121 Bonn, Germany [3]Astronomy Department, University of Michigan, Ann Arbor, MI 48109, USA [4]Astronomical Institute of St.-Petersberg State University, Petrodvoretz, St.-Petersburg, Russia [5]International Max-Planck Research School for Radio and Infrared Astronomy at the Universities of Bonn and Cologne, Petrodvoretz, St.-Petersburg, Russia |
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| 基金项目： | Acknowledgements S. J. Qian acknowledges the hospitality and financial support of the Max-Planck-Institut for Radioastronomie during his visit in 2006. N.A. Kudryavtseva was supported for this research through a stipend from the International Max-Planck Research School （IMPRS） for Radio and Infrared Astronomy at the Universities of Bonn and Cologne. |
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| 摘 要： | During the period 1966.5–2006.2 the 15GHz and 8GHz light curves of 3C 454.3 (z = 0.859) show a quasi-periodicity of ～12.8 yr (～6.9 yr in the rest frame of the source) with a double-bump structure. This periodic behaviour is interpreted in terms of a rotating double-jet model in which the two jets are created from the black holes of a binary system and rotating with the period of the orbital motion. The periodic variations in the radio fluxes of 3C 454.3 are suggested to be mainly due to the lighthouse effects (or the variation in Doppler boosting) of the precessing jets caused by the orbital motion. In addition, variations in the rate of mass accreting onto the black holes may be also involved.
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| 关 键 词： | radio continuum: galaxies — Quasars: individual: 3C 454.3 |
| 修稿时间： | 2006-09-22 |
A Possible Periodicity in the Radio Light Curves of 3C 454.3 |
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| Shan-Jie Qian,N.A.Kudryavtseva,S.Britzen,T.P.Krichbaum,Long Gao,A.Witzel,J.A.Zensus,M.F Aller,H.D.Aller,Xi-Zhen Zhang. A Possible Periodicity in the Radio Light Curves of 3C 454.3[J]. Chinese Journal of Astronomy and Astrophysics, 2007, 7(3): 364-374 |
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| Authors: | Shan-Jie Qian N.A.Kudryavtseva S.Britzen T.P.Krichbaum Long Gao A.Witzel J.A.Zensus M.F Aller H.D.Aller Xi-Zhen Zhang |
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| Abstract: | |
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| Keywords: | radio continuum:galaxies-Quasars:individual:3C 454.3 |
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