arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.04183astro-ph.HEgr-qc
收藏

约束KRZ形变参数I:超大质量黑洞X射线数据的极限

Constraining the KRZ deformation parameters I: limits from supermassive black hole X-ray data

Askar B. Abdikamalov, Dimitry Ayzenberg, Cosimo Bambi, Sourabh Nampalliwar, Ashutosh Tripathi

摘要:

X射线反射光谱学是一种强有力的技术,用于探测在所谓的强场区域中黑洞周围引力的性质。其中最流行的一种探索是研究克尔解与理论无关的偏差,这是经典广义相对论中唯一与天体物理学相关的黑洞解,以验证天体物理学上的黑洞是否由克尔度规描述。我们最近将我们的X射线反射光谱框架扩展到由Konoplya,Rezzolla和Zhidenko提出的一类非常一般的轴对称非Kerr黑洞(Phys. Rev. D93,064015,2016)。在这里,我们分析了XMM牛顿和NuSTAR观测的超大质量黑洞在塞弗特1星系MCG-06-30-15与六个不同的偏差参数的扩展模型。我们恢复克尔解决方案在所有情况下,但一些变形参数约束不佳。我们讨论了这种核查的影响和未来的可能性。

英文摘要:

X-ray reflection spectroscopy is a powerful technique for probing the nature of gravity around black holes in the so-called strong field regime. One of the most popular of such probes is to look at theory-agnostic deviations away from the Kerr solution, which is the only astrophysically relevant black hole solution within classical general relativity, in order to verify whether astrophysical black holes are described by the Kerr metric. We have recently extended our X-ray reflection spectroscopy framework to a class of very general axisymmetric non-Kerr black holes proposed by Konoplya, Rezzolla & Zhidenko (Phys. Rev. D93, 064015, 2016). Here, we analyze XMM-Newton and NuSTAR observations of the supermassive black hole in the Seyfert 1 galaxy MCG-06-30-15 with six different deviation parameters of this extended model. We recover the Kerr solution in all cases, but some deformation parameters are poorly constrained. We discuss the implications of this verification and future possibilities.

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。

↑