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arXiv 1406.7149astro-ph.HE
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致密双星的周期性X射线调制及其与轨道根数的关系

Periodic X-ray Modulation and its relation with orbital elements in Compact Binaries

Arindam Ghosh, Sandip K. Chakrabarti

摘要:

黑洞的伴星在偏心轨道上运行时会受到与轨道周期相同的调制潮汐力。这反过来又会调节吸积速率,以及被逆康普顿化以产生更硬的X射线的种子光子通量。通过分析RXTE的所有天空监测器(ASM)数据(1.5-12 keV)和Swift/BAT的所有天空调查数据(15-50 keV),我们发现在几个对象中存在这种周期性。我们还估计偏心率的均方根功率的峰值周围的准轨道周期(QOP)。我们的方法提供了一个独立的方式来获得时间周期和偏心率的紧凑的双星。

英文摘要:

Stellar companion of a black hole orbiting in an eccentric orbit will experience modulating tidal force with a periodicity same as that of the orbital period. This, in turn, would modulate accretion rates, and the seed photon flux which are inverse Comptonized to produce harder X-rays. By analyzing complete all sky monitor (ASM) data (1.5-12 keV) of RXTE and all sky survey data (15-50 keV) of Swift/BAT we discover this periodicity in several objects. We also estimate eccentricities from the RMS power of the peak around quasi-orbital periods (QOP). Our method provides an independent way to obtain time periods and eccentricities of such compact binaries.

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。

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