Absorption of electromagnetic and gravitational waves by Kerr black holes

被引：36

作者：

Leite, Luiz C. S. ^{[1
,2
]}

Dolan, Sam R. ^{[2
]}

Crispino, Luis C. B. ^{[1
]}

机构：

[1] Univ Fed Para, Fac Fis, BR-66075110 Belem, Para, Brazil

[2] Univ Sheffield, Sch Math & Stat, Consortium Fundamental Phys, Hicks Bldg,Hounsfield Rd, Sheffield S3 7RH, S Yorkshire, England

来源：

PHYSICS LETTERS B | 2017年 / 774卷

基金：

英国工程与自然科学研究理事会; 英国科学技术设施理事会;

关键词：

EQUATIONS;

D O I：

10.1016/j.physletb.2017.09.048

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the absorption cross section for planar waves incident upon Kerr black holes, and present a unified picture for scalar, electromagnetic and gravitational waves. We highlight the spin-helicity effect that arises from a coupling between the rotation of the black hole and the helicity of a circularly-polarized wave. For the case of on-axis incidence, we introduce an extended 'sine approximation' to quantify the spin-helicity effect in the strong-field regime. (c) 2017 The Author(s). Published by Elsevier B.V.

引用

页码：130 / 134

页数：5

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