PoS - Proceedings of Science
Volume 312 - 7th International Fermi Symposium (IFS2017) - Session Active Galactic Nuclei
Time-domain behavior of blazar OJ 287 and the binary supermassive black hole conjecture
S. Ciprini,* M.J. Valtonen, S. Zola, A. Goyal, P. Pihajoki
*corresponding author
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Published on: December 12, 2017
The proper understanding of blazar variability at the various electromagnetic spectral bands is one goal of multifrequency astrophysics. In this frame a peculiar and controversial phenomenology is the periodicity, postulated for long-term radio or optical flux light curves of about a dozen of blazars. The well-known BL Lac object OJ 287 (PKS 0851+202, S3 0851+20, PG 0851+202, z=0.306) is not only a high-variable, peculiar, extragalactic source with hints for approximatively cyclical optical outbursts, but it also represents a case of substantial intensive and extensive (long-term) multifrequency observations. This rich database allow us a deeper analysis based on a wide range of variability timescales with some recent results that are highlighted here.
DOI: https://doi.org/10.22323/1.312.0041
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