银河系中心源CXOGC J174536 .1-285638中X射线周期的发现和解释
Discovery and Interpretation of an X-ray Period in the Galactic Center Source CXOGC J174536.1-285638
摘要：
本文介绍了X射线源CXOGC J174536.1-285638的X射线和红外观测结果。以前的观测表明，这个源可能是一个具有高质量施主的吸积双星（HMXB）或碰撞风双星（CWB）。基于Chandra和XMM-Newton光变曲线，我们发现了一个明显的189+/-6天周期，置信度超过99.997%。我们讨论了这种周期性的几种可能的原因，包括轨道和超轨道的解释。我们详细探讨的可能性，X射线调制与轨道周期，并讨论了两种情况下的影响，其中一种情况下的变化是由恒星风的X射线源的遮蔽造成的，另一种情况下，它是由日食的X射线源。我们发现在第一种情况下，CXOGC J174536.1-285638与CWB和HMXB解释一致，但在第二种情况下，CXOGC J174536.1-285638更可能是HMXB。
英文摘要：
We present X-ray and infrared observations of the X-ray source CXOGC J174536.1-285638. Previous observations suggest that this source may be an accreting binary with a high-mass donor (HMXB) or a colliding wind binary (CWB). Based on the Chandra and XMM-Newton light curve, we have found an apparent 189+/-6 day periodicity with better than 99.997% confidence. We discuss several possible causes of this periodicity, including both orbital and superorbital interpretations. We explore in detail the possibility that the X-ray modulation is related to an orbital period and discuss the implications for two scenarios; one in which the variability is caused by obscuration of the X-ray source by a stellar wind, and the other in which it is caused by an eclipse of the X-ray source. We find that in the first case, CXOGC J174536.1-285638 is consistent with both CWB and HMXB interpretations, but in the second, CXOGC J174536.1-285638 is more likely a HMXB.
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