arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2409.13481astro-ph.HE
收藏

黑洞候选X射线双星MAXI J1813-095的NICER、Swift、Chandra和NuSTAR自洽盘反射分析

Self-Consistent Disk-Reflection Analysis of the Black-Hole Candidate X-ray Binary MAXI J1813-095 with NICER, Swift, Chandra, and NuSTAR

Santiago Ubach, James F. Steiner, Jiachen Jiang, Javier Garcia, Riley M. T. Connors, Guglielmo Mastroserio, Ye Feng, John A. Tomsick

AI总结:

利用多卫星数据对MAXI J1813-095进行自洽盘反射分析,发现反射分数显著高于以往,支持轻微截断或非截断盘,最小自旋>0.7。

摘要:

我们展示了在2018年硬态"停滞"爆发期间对MAXI J1813-095的分析。这项自洽分析使用了NICER、Swift、Chandra和NuSTAR在MAXI J1813-095的七次观测数据。我们在吸积盘内区发现了一条相对论性铁线,能量约为6.5 keV。我们的结果与内半径约为2R_g的轻微截断盘或非截断盘一致,最小自旋为>0.7,最佳值约为0.9,假设R_in在L_x约为1% L_Edd时达到最内稳定圆轨道。我们使用一个光谱模型分析了MAXI J1813-095的爆发过程,该模型自洽地将种子盘光子与康普顿化和反射成分耦合,并包含了反射康普顿化。这项工作的独特之处在于反射分数约为1,显著高于先前对该源的研究,这是应用自洽盘-康普顿化-反射光谱模型的结果。其他关键参数如倾角和内半径与其他研究结果一致。

英文摘要:

We present our analysis of MAXI J1813-095 during its hard state ``stalled'' outburst in 2018. This self-consistent analysis has been carried out using \NICER, \Swift, \Chandra, and {\NuSTAR} throughout seven observations of MAXI J1813-095. We find a relativistic iron line at $\sim$6.5 keV from the inner region of the accretion disk. Our results are consistent with a slightly truncated disk or non-truncated disk for an inner radius of $\sim$2$R_\mathrm{g}$ and minimum spin of $>$0.7 with a best value of $\sim0.9$, assuming $R_\mathrm{in}$ reaches the innermost stable circular orbit at $\it{L_\mathrm{x}}$ $\sim$ 1\% $\it{L_\mathrm{Edd}}$. We analyzed MAXI J1813-095 over its outburst employing a spectral model which self-consistently couples the seed disk photons to the Comptonization and reflection components, also inclusive of reflection Comptonization. The unique aspect of this work is a reflection fraction of order unity, which is significantly higher than previous studies of this source, and is a consequence of applying the self-consistent disk-Comptonization-reflection spectral model. Other key parameters such as inclination and inner radius are found to be consistent with other works. works.

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。

↑