Photon emission of extremal Kerr–Newman black holes

被引：0
作者：
Shao-Wen Wei
Bao-Min Gu
Yong-Qiang Wang
Yu-Xiao Liu
机构：
[1] Lanzhou University,Institute of Theoretical Physics
来源：
The European Physical Journal C | 2017年 / 77卷
关键词：
Black Hole; Black Hole Solution; Black Hole Horizon; Extremal Black Hole; Null Geodesic;
D O I：
暂无
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学科分类号：
摘要：
In this paper, we deal with the null geodesics extending from the near-horizon region out to a distant observatory in an extremal Kerr–Newman black hole background. In particular, using the matched asymptotic expansion method, we analytically solve the null geodesics near the superradiant bound in the form of algebraic equations. For the case that the photon trajectories are limited in the equatorial plane, the shifts in the azimuthal angle and time are obtained.
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