arXiv 0711.29762007-11-19astro-ph

XMM-牛顿和宽铁线

XMM-Newton and Broad Iron Lines

A. C. Fabian

备注：: 7 pages, 18 figures, accepted for publication in Astron. Nachr. (ESAC Conference)
DOI：: 10.1002/asna.200710902

摘要：

在吸积黑洞的X射线谱中，铁线发射是很常见的。当谱线发射很宽或变化时，它很可能来自黑洞附近。X射线照射的吸积流的幂律X射线连续产生的X射线“反射”光谱，其中包括铁线。铁线条和反射的形状和变化性可用作流动的半径、速度和性质的诊断。稠密流的内半径对应于最里面的稳定圆轨道，因此可以用来确定黑洞的自旋。对宽铁谱线和反射光谱的研究为理解黑洞周围吸积流（和流出流）的内部如何运作提供了很大的希望。XMM-Newton仍有很大的潜力继续在这项工作中取得重大进展。对高质量光谱的需求以及因此对长曝光时间的需求是至关重要的。

英文摘要：

Iron line emission is common in the X-ray spectra of accreting black holes. When the line emission is broad or variable then it is likely to originate from close to the black hole. X-ray irradiation of the accretion flow by the power-law X-ray continuum produces the X-ray 'reflection' spectrum which includes the iron line. The shape and variability of the iron lines and reflection can be used as a diagnostic of the radius, velocity and nature of the flow. The inner radius of the dense flow corresponds to the innermost stable circular orbit and thus can be used to determine the spin of the black hole. Studies of broad iron lines and reflection spectra offer much promise for understanding how the inner parts of accretion flows (and outflows) around black holes operate. There remains great potential for XMM-Newton to continue to make significant progress in this work. The need for high quality spectra and thus for long exposure times is paramount.

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。

摘要：

英文摘要：

相关论文