论文标题
OJ 287的2020年4月至6月的超级爆炸及其长期的多波长光曲线与Swift：二进制超级质量黑洞和喷气活动
The April-June 2020 super-outburst of OJ 287 and its long-term multiwavelength light curve with Swift: binary supermassive black hole and jet activity
论文作者
论文摘要
我们报告了2020年4月至6月的OJ 287的非常明亮的X射线武器爆发的检测；自2015年底以来我们迅速多年监测以来的第二次最聪明。这表明爆发主要由喷气发射驱动。光学UV-X射线密切相关，并且XMM-Newton Spectrum的低能部分显示出与同步子来源一致的异常软发射组件。 Nustar检测到一个更难的X射线powerLaw组件（与反庞大模型的期望相比，与来自逆通型模型的预期相比，γ-X = 2.4，相对较高）。我们找到了与吸收线一致的FE区域重新处理的证据。如果得到确认，则意味着在大约0.1c的流出中很重要。多年的Swift Lightcurve显示了多个发作或浸入的发作，其总可变性为10倍，X射线为10，而光学-UV中有15倍。 2020年爆发的观察结果与OJ 287的二进制黑洞模型预测的后抛光相一致，其中次级黑洞的磁盘影响会触发原发性黑洞的时间延迟的积聚和喷射活性。
We report detection of a very bright X-ray-UV-optical outburst of OJ 287 in April-June 2020; the second brightest since the beginning of our Swift multi-year monitoring in late 2015. It is shown that the outburst is predominantly powered by jet emission. Optical-UV-X-rays are closely correlated, and the low-energy part of the XMM-Newton spectrum displays an exceptionally soft emission component consistent with a synchrotron origin. A much harder X-ray powerlaw component (Gamma-x = 2.4, still relatively steep when compared to expectations from inverse-Compton models) is detected out to 70 keV by NuSTAR. We find evidence for reprocessing around the Fe region, consistent with an absorption line. If confirmed, it implies matter in outflow at approx 0.1c. The multi-year Swift lightcurve shows multiple episodes of flaring or dipping with a total amplitude of variability of a factor of 10 in X-rays, and 15 in the optical-UV. The 2020 outburst observations are consistent with an after-flare predicted by the binary black hole model of OJ 287, where the disk impact of the secondary black hole triggers time-delayed accretion and jet activity of the primary black hole.
