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arXiv 2212.01151astro-ph.HE
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具有流出物的灯柱和Cyg X-1的硬态

Lamp-post with an outflow and the hard state of Cyg X-1

Lukasz Klepczarek, Andrzej Niedzwiecki, Michal Szanecki

摘要:

在吸积黑洞的硬态中观察到的相对论反射通常显示出相对于主康普顿化分量的弱振幅,这可能是由于圆盘截断或X射线源的非各向同性,例如由于远离反射器的运动。我们在这里调查后一种情况,假设X射线源位于克尔黑洞的对称轴上。我们讨论了反射辐射的适当计算相关的影响,并在数据分析模型中实现了它们。我们将其应用到同时朱雀和NuSTAR观测天鹅座X-1在硬态,我们发现一个很好的适合未截断的光盘照射的源远离它在0.36 c。然而,我们发现一个稍微好一点的解决方案,在几何形状接近截断盘照射的内部热流。在这个解中,我们要么仍然需要一个亚相对论性的流出,要么观测者对面的源必须对直接观测到的辐射有贡献。我们还讨论了实施之间的差异的流出效应在RekerrV和relxillpCp。

英文摘要:

Relativistic reflection observed in the hard states of accreting black holes often shows a weak amplitude relative to the main Comptonization component, which may result from either a disc truncation or a non-isotropy of the X-ray source, e.g. due to a motion away from the reflector. We investigate here the latter case, assuming that the X-ray source is located on the symmetry axis of the Kerr black hole. We discuss effects relevant to a proper computation of the reflected radiation and we implement them in the model for data analysis, reflkerrV. We apply it to the simultaneous Suzaku and NuSTAR observation of Cyg X-1 in the hard state and we find a good fit for an untruncated disc irradiated by the source moving away from it at 0.36c. However, we find a slightly better solution in a geometry closely approximating the truncated disc irradiated by an inner hot flow. In this solution we either still need a subrelativistic outflow or the source opposite to the observer must contribute to the directly observed radiation. We also discuss differences between the implementation of the outflow effect in reflkerrV and in relxilllpCp.

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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