Low-frequency absorption cross section of the electromagnetic waves for extreme Reissner-Nordstrom black holes in higher dimensions

被引：22

作者：

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

Higuchi, Atsushi ^{[2
]}

Matsas, George E. A. ^{[3
]}

机构：

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

[2] Univ York, Dept Math, York YO10 5DD, N Yorkshire, England

[3] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 12期

关键词：

PERTURBATIONS; UNIVERSALITY; CONVERSION; RADIATION; STABILITY; EMISSION; ENERGY;

D O I：

10.1103/PhysRevD.82.124038

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the low-frequency absorption cross section of the electromagnetic waves for extreme Reissner-Nordstrom black holes in higher dimensions. We first construct the exact solutions to the relevant wave equations in the zero-frequency limit. In most cases it is possible to use these solutions to find the transmission coefficients of partial waves in the low-frequency limit. We use these transmission coefficients to calculate the low-frequency absorption cross section in five and six spacetime dimensions. We find that this cross section is dominated by the modes with l = 2 in the spherical-harmonic expansion rather than those with l = 1, as might have been expected, because of the mixing between the electromagnetic and gravitational waves. We also find an upper limit for the low-frequency absorption cross section in dimensions higher than six.

引用

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