论文标题

黑洞X射线二进制物的全球增生特性:现象学角度

Global Accretion Properties of Black Hole X-Ray Binaries: A Phenomenological Perspective

论文作者

Jana, Arghajit

论文摘要

黑洞X射线二进制文件(BHXB)在光谱和时序特性中显示出丰富的现象学。我们从不同光谱状态的文献中收集了20个BHXB的光谱数据。在内部圆盘温度($ t _ {\ rm in} $),光子索引($γ$),热电子温度($ kt _ {\ rm e} $),x-ray flux($ f _ {\ rm x} $)和Luminosity($ l _ _ {$ lmmm)中,以内圆盘温度($ t _ {\ rm in} $)的形式进行了研究。我们研究了不同光谱参数之间的各种相关性,以了解全球范围内的积聚过程。在热软状态(TSS)中,我们发现大多数遵循$ f _ {\ rm disc} \ propto t _ {\ rm in}^4 $关系的来源。在硬化状态(HCS)中发现了$γ$和总的光度($ l _ {\ rm tot} $)之间的“ v'形相关性”。观察到构成的光度与HCS和TSS中的圆盘发光度相关。在中间状态(IMS)中未观察到显着的相关性。在HCS和IMS中,尚不清楚内盘半径($ r _ {\ rm in} $)的演变。我们还讨论了热电子温度如何随其他光谱参数变化。我们观察到铁线通量与圆盘和构成通量相关。在光谱状态下发现,重新加工发射的强度有所不同。

Black hole X-ray binaries (BHXBs) show rich phenomenology in the spectral and timing properties. We collected the spectral data of 20 BHXBs from the literature across different spectral states. The spectral properties are studied in the forms of the inner disc temperature ($T_{\rm in}$), photon index ($Γ$), hot electron temperature ($kT_{\rm e}$), X-ray flux ($F_{\rm X}$) and luminosity ($L_{\rm X}$). We studied various correlations among different spectral parameters to understand the accretion process on a global scale. In the thermal soft states (TSS), we find most of the sources followed $F_{\rm disc} \propto T_{\rm in}^4$ relation. A `V'-shaped correlation is found between $Γ$ and total luminosity ($L_{\rm tot}$) in the hard Comptonized state (HCS). The Comptonized luminosity is observed to be correlated with the disc luminosity in the HCS and TSS. No notable correlation is observed in the intermediate state (IMS). The evolution of the inner disc radius ($R_{\rm in}$) is unclear in the HCS and IMS. We also discuss how the hot electron temperature changes with other spectral parameters. We observe that the iron line flux correlates with disc and Comptonized fluxes. The strength of the reprocessed emission is found to vary across spectral states.

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