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- Title
Radio variability of the blazar S5 0716+714: a ∼6.1 year quasi-periodicity.
- Authors
Li, Xiao-Pan; Luo, Yu-Hui; Yang, Hai-Yan; Yang, Cheng; Cai, Yan; Yang, Hai-Tao; Zhou, Li; Shan, Yu-Qiong
- Abstract
We report a ∼6.1 yr quasi-periodicity for the blazar S5 0716+714 using the radio light curves at 4.8, 8 and 14.5 GHz observed by the University of Michigan Radio Astronomical Observatory (UMRAO) from 1981 to 2012, by means of the Jurkevich, discrete correlation function (DCF) and power spectral analysis techniques. There are a general correlation among light curves at different frequencies and a time lag of 170±10<inline-graphic></inline-graphic> days between 4.8 and 14.5 GHz light curves can be confirmed. We also estimate the orbit parameters assuming a binary black hole system, and the magnetic field strength under the jet comoving frame.
- Subjects
BL Lacertae objects; BINARY black holes; MAGNETIC field effects; ACTIVE galactic nuclei; LIGHT curves
- Publication
Astrophysics & Space Science, 2018, Vol 363, Issue 8, p1
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-018-3391-1