论文标题
tick-tick巨大黑洞二进制候选者的光学随访
Optical follow-up of the tick-tock massive black hole binary candidate
论文作者
论文摘要
观察大量黑洞二进制文件（MBHB）是我们完全理解星系合并和预期重力波（GWS）信号的关键。但是，MBHB仍然难以捉摸，迄今为止只有少数候选人。其中，SDSSSJ143016.05+230344.4（以下称'tick-tock'）是唯一一个具有非常好的采样光曲线的候选者，显示了在三年观察结果中调制期和振幅明显降低。最近，该特定功能被认为是即将合并的MBHB的签名。在本文中，我们使用Rapid Eye Mount（REM）望远镜对Tick-Tock源提供了光学随访。在我们的后续行动中观察到的降低的亮度几乎无法在二进制方案中解释。我们推测了一种替代方案，该场景可能通过相对论的晶状体曲线分解围绕一个巨大的黑洞来解释观察到的光曲线。
The observation of a population of massive black hole binaries (MBHBs) is key for our complete understanding of galaxy mergers and for the characterization of the expected gravitational waves (GWs) signal. However, MBHBs still remain elusive with only a few candidates proposed to date. Among these, SDSSJ143016.05+230344.4 ('tick-tock' hereafter) is the only candidate with a remarkably well sampled light curve showing a clear reduction of the modulation period and amplitude over three years of observations. This particular feature has been recently claimed to be the signature of a MBHB that is about to merge. In this paper, we provide an optical follow-up of the tick-tock source using the Rapid Eye Mount (REM) telescope. The decreasing luminosity observed in our follow up is hardly explained within the binary scenario. We speculate about an alternative scenario that might explain the observed light curve through relativistic Lense-Thirring precession of an accretion disc around a single massive black hole.
