Valtonen M, Zola S, Gopakumar A, Gazeas K, Ogloza W, Drozdz M, Siwak M, Debski B, Dalessio J, Sadakane K, et al. The 2015 outburst of the OJ287 blazar. [Internet]. 2015;8378:1.
A model that contains a massive BH binary was proposed to explain the double peaked quasi-periodical (roughly about 12 years) outbursts of the blazar OJ287.
