Image of a Kerr-Melvin black hole with a thin accretion disk

被引：65

作者：

Hou, Yehui ^{[1
]}

Zhang, Zhenyu ^{[1
]}

Yan, Haopeng ^{[2
]}

Guo, Minyong ^{[3
]}

Chen, Bin ^{[1
,2
,4
]}

机构：

[1] Peking Univ, Dept Phys, 5 Yiheyuan Rd, Beijing 100871, Peoples R China

[2] Peking Univ, Ctr High Energy Phys, 5 Yiheyuan Rd, Beijing 100871, Peoples R China

[3] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China

[4] Collaborat Innovat Ctr Quantum Matter, 5 Yiheyuan Rd, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 06期

关键词：

M87 EVENT HORIZON; TELESCOPE RESULTS. I; MAGNETIC-FIELD; GEODESICS; SHADOW;

D O I：

10.1103/PhysRevD.106.064058

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this present work, we study the observational appearance of Kerr-Melvin black hole (KMBH) illuminated by an accretion disk. The accretion disk is assumed to be located on the equatorial plane and to be thin both geometrically and optically. Considering the fact that outside the innermost stable circular orbit (ISCO) the accretion flow moves in prograde or retrograde circular orbit and falls toward the horizon along plunging orbit inside the ISCO, we develop the numerical backward ray-tracing method and obtain the images of KMBH accompanying with the accretion disk for various black hole spins, strengths of magnetic fields, and inclination angles of observers. We present the intensity distribution horizontally and longitudinally and show the profiles of the redshift for the direct and lensed images. Our study suggests that the inner shadow and critical curves can be used to estimate the magnetic field around a black hole without degeneration.

引用

页数：13

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