Testing the no-hair theorem with observations of black holes in the electromagnetic spectrum

被引：21

作者：

Johannsen, Tim ^{[1
]}

Psaltis, Dimitrios ^{[2
]}

机构：

[1] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[2] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA

来源：

ADVANCES IN SPACE RESEARCH | 2011年 / 47卷 / 03期

基金：

美国国家科学基金会;

关键词：

Accretion; accretion disks; Black hole physics; Gravitation; Galaxy: center; Gravitational lensing: strong; Line: profiles; X-RAY-POLARIZATION; ACCRETION DISKS; GRAVITATIONAL-WAVES; MASSIVE BODY; IRON LINES; A-ASTERISK; KERR; EMISSION; HORIZON; PARAMETERS;

D O I：

10.1016/j.asr.2010.10.019

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

According to the no-hair theorem, astrophysical black holes are uniquely described by their mass and spin. In this paper, we review a new framework for testing the no-hair hypothesis with observations in the electromagnetic spectrum. The approach is formulated in terms of a Kerr-like spacetime containing a quadrupole moment that is independent of both mass and spin. If the no-hair theorem is correct, then any deviation from the Kerr metric quadrupole has to be zero. We show how upcoming VLBI imaging observations of Sgr A* as well as spectroscopic observations of iron lines from accreting black holes with IXO may lead to the first astrophysical test of the no-hair theorem. (C) 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：528 / 532

页数：5

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