论文标题
最大j1813-095的坚硬状态的Nustar和Swift视图
A NuSTAR and Swift View of the Hard State of MAXI J1813-095
论文作者
论文摘要
我们对2018年失败的过渡爆发中的黑洞候选人Maxi J1813-095进行了对黑洞候选人的Nustar和Swift光谱的分析。Nustar的观察结果表明证据表明，积聚盘内部区域的发射反射。通过对光谱中的反射组件进行建模，我们找到了$ r _ {\ rm in} <7 $ $ $ r _ {\ rm g} $的光盘内半径。该结果表明，在Maxi J1813-095中，以Eddington限制的百分之几的略微截断的盘或未截断的盘形式。我们最适合的反射模型表明，在Nustar观察期间，最内向的积聚的几何形状保持一致。从多阶段观测值中，最大J1813-095的光谱变异性由组合发射的可变光子指数主导。
We present an analysis of the NuSTAR and Swift spectra of the black hole candidate MAXI J1813-095 in a failed-transition outburst in 2018. The NuSTAR observations show evidence of reflected emission from the inner region of the accretion disc. By modelling the reflection component in the spectra, we find a disc inner radius of $R_{\rm in}<7$ $r_{\rm g}$. This result suggests that either a slightly truncated disc or a non-truncated disc forms at a few percent of the Eddington limit in MAXI J1813-095. Our best-fit reflection models indicate that the geometry of the innermost accretion remains consistent during the period of NuSTAR observations. The spectral variability of MAXI J1813-095 from multi-epoch observations is dominated by the variable photon index of the Comptonisation emission.
