利用广义相对论百年耀斑验证OJ 287中相对论大质量黑洞双星的存在：改进的轨道参数
Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using its General Relativity Centenary Flare: Improved Orbital Parameters
摘要：
对PSR 1913+16等相对论性致密双星的定期监测结果与引力波（GW）的主导（四极）级发射一致。我们发现，与二进制黑洞中央引擎的blazar OJ 287的观测要求包括引力辐射反应的影响超出了四极顺序。事实证明，即使是某些遗传贡献的GW排放的影响，需要预测OJ 287的影响耀斑的时间。我们开发了一种方法，将这种效果到OJ~287的二元黑洞模型。这使我们能够证明一个很好的协议之间所观察到的影响耀斑的时间和预测从十个轨道周期的二进制黑洞中央引擎模型。推断出的轨道周期衰减率比PSR 1913+16的观测值高出9个数量级，再次证明了OJ 287的中心引擎的相对论性质。最后，我们认为，预测的2019年撞击耀斑的精确时间应该允许在10%的水平上测试著名的黑洞“无毛定理”。
英文摘要：
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 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 binary black hole 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 binary black hole 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's central engine. Finally, we argue that precise timing of the predicted 2019 impact flare should allow a test of the celebrated black hole "no-hair theorem" at the 10% level.
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