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arXiv 2209.01643astro-ph.HE
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黑洞源H1743-322中的B型QPO及其与康普顿化区和喷流的联系

Type-B QPOs in the black hole source H1743-322 and their association with Comptonization region and Jet

Harikrishna Sripada, Sriram Kandulapati

摘要:

在黑洞X射线双星中,人们对B型QPO与内部吸积盘区域热流的联系还不太清楚。我们对23个观测结果进行了频谱和时序研究,其中C型和B型QPO具有相似的质心频率(~ 6 Hz)。它们的光谱差异被用来理解B型QPO的产生机制,以及准同步射电观测。根据光谱结果,我们没有注意到在C型和B型QPO期间康普顿化参数和内盘半径的变化。我们发现,康普顿化区域的结构必须是不同的观察与C型和B型QPO的基础上CompTT模型。射电通量密度与QPO宽度、软硬通量比以及QPO宽度与内盘温度的关系都有一定的趋势,表明喷流可能是H1743-322中B型QPO的成因。需要进一步的研究来独特地限制这种情况。在一个案例研究中,从C型到B型QPO的逐渐过渡被注意到,我们发现,光谱的变化可以被解释的射流或垂直延伸的光学厚康普顿化区域的存在。几何透镜Thirring进动模型与热流和喷流在内部区域被纳入解释的光谱和时间的变化。

英文摘要:

The connection of type-B QPOs to the hot flow in the inner accretion disk region is vaguely understood in black hole X-ray binaries. We performed spectral and timing studies of twenty-three observations where type-C and type-B QPOs with similar centroid frequencies (~ 6 Hz) occurred. Their spectral differences were used to understand the production mechanism of type-B QPOs, along with the quasi-simultaneous radio observations. Based on the spectral results, we did not notice many variations in the Comptonization parameters and the inner disk radius during type-C and type-B QPOs. We found that the structure of the Comptonization region has to be different for observations associated with type-C and type-B QPOs based on the CompTT model. Radio flux density vs QPO width, soft to hard flux ratio, and QPO width vs inner disk temperature, were found to follow certain trends, suggesting that a jet could be responsible for the type-B QPOs in H1743-322. Further studies are required to uniquely constrain this scenario. In a case study where a gradual transition from type-C to type-B QPO was noticed, we found that the spectral changes could be explained by the presence of a jet or a vertically extended optically thick Comptonization region. The geometrical Lense-Thirring precession model with a hot flow and a jet in the inner region was incorporated to explain the spectral and timing variations.

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