The Unique Blazar OJ 287 and Its Massive Binary Black Hole Central Engine

@article{Dey2019TheUB,
  title={The Unique Blazar OJ 287 and Its Massive Binary Black Hole Central Engine},
  author={Lankeswar Dey and A. Gopakumar and Mauri Valtonen and Stanislaw Zola and Abhimanyu Susobhanan and Ren'e Hudec and Pauli Pihajoki and Tapio Pursimo and Andrei V. Berdyugin and Vilppu Piirola and Stefano Ciprini and Kari Nilsson and Helen E. Jermak and Mark Richard Kidger and Stefanie Komossa},
  journal={Universe},
  year={2019}
}
The bright blazar OJ 287 is the best-known candidate for hosting a nanohertz gravitational wave (GW) emitting supermassive binary black hole (SMBBH) in the present observable universe. The binary black hole (BBH) central engine model, proposed by Lehto and Valtonen in 1996, was influenced by the two distinct periodicities inferred from the optical light curve of OJ 287. The current improved model employs an accurate general relativistic description to track the trajectory of the secondary black… 

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