Time-domain behavior of blazar OJ 287 and the binary supermassive black hole conjecture

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Ciprini , S , Valtonen , M J , Zola , S , Goyal , A & Pihajoki , P 2017 , ' Time-domain behavior of blazar OJ 287 and the binary supermassive black hole conjecture ' , PoS Proceedings of Science , vol. 312 , 041 . https://doi.org/10.22323/1.312.0041

Title: Time-domain behavior of blazar OJ 287 and the binary supermassive black hole conjecture
Author: Ciprini, S.; Valtonen, M.J.; Zola, S.; Goyal, A.; Pihajoki, P.
Contributor: University of Helsinki, Particle Physics and Astrophysics
Date: 2017
Language: eng
Number of pages: 5
Belongs to series: PoS Proceedings of Science
ISSN: 1824-8039
URI: http://hdl.handle.net/10138/299486
Abstract: 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. © Copyright owned by the author(s).
Subject: Extragalactic sources
Light curves
Multi frequency
Optical flux
Spectral band
Supermassive black holes
Time domain
Time-scales, Astrophysics
114 Physical sciences
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