Swift J1753 .5-0127：轨道周期最短的黑洞候选者
Swift J1753.5-0127: The Black Hole Candidate with the shortest orbital period
摘要：
我们提出了时间分辨测光的光学对应物的黑洞候选人斯威夫特J1753.5-0127，它一直保持在低/硬X射线状态和明亮的光学/红外波长自2005年发现。在我们的观测时，雨燕J1753.5-0127没有表现出衰减趋势，但在R=16.45处保持稳定，夜间变化约为0.05 mag. R波段光变曲线，从2007年6月3日至8月31日，不是正弦曲线，但表现出复杂的形态，形状和振幅发生了显着变化。最佳周期确定为3.2443 ± 0.0010小时。这个光度周期可能是一个超级峰周期，比轨道周期稍大。因此，斯威夫特J1753.5-0127是迄今为止观测到的轨道周期最短的黑洞候选者。我们对距离的估计与以前公布的值相当，可能将斯威夫特J1753.5-0127置于星系晕中。
英文摘要：
We present time-resolved photometry of the optical counterpart to the black hole candidate Swift J1753.5-0127, which has remained in the low/hard X-ray state and bright at optical/IR wavelengths since its discovery in 2005. At the time of our observations Swift J1753.5-0127 does not show a decay trend but remains stable at R=16.45 with a night to night variability of ~0.05 mag. The R-band light curves, taken from 2007 June 3 to August 31, are not sinusoidal, but exhibit a complex morphology with remarkable changes in shape and amplitude. The best period determination is 3.2443+-0.0010 hours. This photometric period is likely a superhump period, slightly larger than the orbital period. Therefore, Swift J1753.5-0127 is the black hole candidate with the shortest orbital period observed to date. Our estimation of the distance is comparable to values previously published and likely places Swift J1753.5-0127 in the Galactic halo.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
