论文标题
SGR A*的可能的证据，恒星的距离为〜3.3 Schwarzscild Radii的恒星与黑洞
Possible evidence from the flaring activity of Sgr A* for a star at a distance of ~3.3 Schwarzscild radii from the blackhole
论文作者
论文摘要
X射线中的频繁燃烧事件和SGR A*的NIR辐射似乎并不是周期性的。但是，在这两种类型的事件的记录到达时间中都发现了统计规律，在这里称为“起搏器调制”。 X射线起搏器的特征时间为149分钟，NIR起搏器的时间为40分钟。它们从观察到的数据中得出的现实可以分别以大于4.6σ和3.8σ水平的统计置信度接受。这些结果可以解释为在BH的3-3.5 Schwarzschild Radii的距离略微椭圆形的进攻轨道中围绕Sgr a*围绕BH的恒星的证据。 X射线起搏器的周期不是耀斑发生的周期性，是星轨道运动的光环时期。这是恒星连续两次通过其轨道中心连续段落之间的时间间隔。 NIR起搏器时期是星星革命的恒星二元时期。 X射线耀斑的起源是在恒星中发生的巨大质量损失发作，最好是在二进制革命的候选者阶段附近。 NIR耀斑起源或由恒星内部的过程触发。沿地球方向发射的辐射是通过在恒星二进制频率下的BH \ star二元与地球视线的两个组件的变化纵横比的变化略微调节的。
The frequent flaring events in the X-ray and the NIR radiation of Sgr A* seem not to be periodic in time. However, statistical regularities, here termed "modulations by a pacemaker", are found in the recorded arrival times of both types of events. The characteristic time of the X-ray pacemaker is 149 min and that of the NIR pacemaker is 40 min. Their reality as derived from observed data can be accepted at larger than 4.6σ and 3.8σ levels of statistical confidence, respectively. These results can be interpreted as evidence for a star that revolves around the BH of Sgr A* in a slightly elliptical precessing orbit, at a distance of 3-3.5 Schwarzschild radii of the BH. The period of the X-ray pacemaker, which is not a periodicity of the flare occurrences themselves, is the epicyclic period of the star orbital motion. This is the time interval between 2 successive passages of the star through the peri-center of its orbit. The NIR pacemaker period is the sidereal binary period of the star revolution. The origin of the X-ray flares is in episodes of intense mass loss from the star that occur preferably near the pericenter phase of the binary revolution. The NIR flares originate or are triggered by processes that are internal to the star. The radiation emitted in the direction of Earth is slightly modulated by the changing aspect ratio of the two components of the BH\star binary to the line of sight from Earth at the sidereal binary frequency.
