@article {28393,
	title = {Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using Its General Relativity Centenary Flare: Improved Orbital Parameters},
	volume = {866},
	year = {2018},
	month = {2018/10/1},
	pages = {11},
	abstract = {Results from regular monitoring of relativistic compact binaries like PSR 1913+16 are consistent with the dominant (quadrupole) order emission of gravitational waves (GWs). We show that observations associated with the binary black hole (BBH) central engine of blazar OJ 287 demand the inclusion of gravitational radiation reaction effects beyond the quadrupolar order. It turns out that even the effects of certain hereditary contributions to GW emission are required to predict impact flare timings of OJ 287. We develop an approach that incorporates this effect into the BBH model for OJ 287. This allows us to demonstrate an excellent agreement between the observed impact flare timings and those predicted from ten orbital cycles of the BBH central engine model. The deduced rate of orbital period decay is nine orders of magnitude higher than the observed rate in PSR 1913+16, demonstrating again the relativistic nature of OJ 287{\textquoteright}s central engine. Finally, we argue that precise timing of the predicted 2019 impact flare should allow a test of the celebrated black hole {\textquotedblleft}no-hair theorem{\textquotedblright} at the 10\% level.},
	keywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena, black hole physics, General Relativity and Quantum Cosmology, gravitation, quasars: general, quasars: individual: OJ 287},
	isbn = {0004-637X},
	url = {https://ui.adsabs.harvard.edu/abs/2018ApJ...866...11D},
	author = {Dey, Lankeswar and Valtonen, M. J. and Gopakumar, A. and Zola, S. and Hudec, R. and Pihajoki, P. and Ciprini, S. and Matsumoto, K. and Sadakane, K. and Kidger, M. and Nilsson, K. and Mikkola, S. and Sillanp{\"a}{\"a}, A. and Takalo, L. O. and Lehto, H. J. and Berdyugin, A. and Piirola, V. and Jermak, H. and Baliyan, K. S. and Pursimo, T. and Caton, D. B. and Alicavus, F. and Baransky, A. and Blay, P. and Boumis, P. and Boyd, D. and Campas Torrent, M. and Campos, F. and Carrillo G{\'o}mez, J. and Chandra, S. and Chavushyan, V. and Dalessio, J. and Debski, B. and Drozdz, M. and Er, H. and Erdem, A. and Escartin P{\'e}rez, A. and Fallah Ramazani, V. and Filippenko, A. V. and Gafton, E. and Ganesh, S. and Garcia, F and Gazeas, K. and Godunova, V. and G{\'o}mez Pinilla, F. and Gopinathan, M. and Haislip, J. B. and Harmanen, J. and Hurst, G. and Jan{\'\i}k, J. and Jelinek, M. and Joshi, A. and Kagitani, M. and Karjalainen, R. and Kaur, N. and Keel, W. C. and Kouprianov, V. V. and Kundera, T. and Kurowski, S. and Kvammen, A. and LaCluyze, A. P. and Lee, B. C. and Liakos, A. and Lindfors, E. and Lozano de Haro, J. and Mugrauer, M. and Naves Nogues, R. and Neely, A. W. and Nelson, R. H. and Ogloza, W. and Okano, S. and Pajdosz-{\'S}mierciak, U. and Pandey, J. C. and Perri, M. and Poyner, G. and Provencal, J. and Raj, A. and Reichart, D. E. and Reinthal, R. and Reynolds, T. and Saario, J. and Sadegi, S. and Sakanoi, T. and Salto Gonz{\'a}lez, J. -L. and Sameer and Schweyer, T. and Simon, A and Siwak, M. and Sold{\'a}n Alfaro, F. C. and Sonbas, E. and Steele, I. and Stocke, J. T. and Strobl, J. and Tomov, T. and Tremosa Espasa, L. and Valdes, J. R. and Valero P{\'e}rez, J. and Verrecchia, F. and Vasylenko, V. and Webb, J. R. and Yoneda, M. and Zejmo, M. and Zheng, W. and Zielinski, P.}
}
