Impact of the Disk Thickness on X-Ray Reflection Spectroscopy Measurements

被引：14

作者：

Tripathi, Ashutosh ^{[1
,2
]}

Abdikamalov, Askar B. ^{[1
,2
,3
]}

Ayzenberg, Dimitry ^{[4
]}

Bambi, Cosimo ^{[1
,2
]}

Liu, Honghui ^{[1
,2
]}

机构：

[1] Fudan Univ, Ctr Field Theory & Particle Phys, Shanghai 200438, Peoples R China

[2] Fudan Univ, Dept Phys, Shanghai 200438, Peoples R China

[3] Ulugh Beg Astron Inst, Tashkent 100052, Uzbekistan

[4] Eberhard Karls Univ Tubingen, Theoret Astrophys, D-72076 Tubingen, Germany

来源：

ASTROPHYSICAL JOURNAL | 2021年 / 913卷 / 02期

基金：

中国国家自然科学基金;

关键词：

BLACK-HOLE HYPOTHESIS; XMM-NEWTON; ACCRETION DISK; SPECTRAL VARIABILITY; GALAXY MCG-6-30-15; WARM ABSORBER; IRON LINE; LONG HARD; ABSORPTION; NUSTAR;

D O I：

10.3847/1538-4357/abf6c5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a previous paper, we presented an extension of our reflection model relxill_nk to include the finite thickness of the accretion disk following the prescription in Taylor & Reynolds. In this paper, we apply our model to fit the 2013 simultaneous observations by the Nuclear Spectroscopic Telescope Array (NuSTAR) and XMM-Newton of the supermassive black hole in MCG-06-30-15 and the 2019 NuSTAR observation of the Galactic black hole in EXO 1846-031. The high-quality data of these spectra had previously led to precise black hole spin measurements and very stringent constraints on possible deviations from the Kerr metric. We find that the disk thickness does not change previous spin results found with a model employing an infinitesimally thin disk, which confirms the robustness of spin measurements in high radiative efficiency disks, where the impact of disk thickness is minimal. Similar analysis on lower accretion rate systems will be an important test for measuring the effect of disk thickness on black hole spin measurements.

引用

页数：14