NULL GEODESICS IN BLACK-HOLE METRICS WITH NONZERO COSMOLOGICAL CONSTANT

被引：76

作者：

STUCHLIK, Z

CALVANI, M

机构：

[1] INT CTR THEORET PHYS,I-34014 TRIESTE,ITALY

[2] ASTRON OBSERV PADUA,I-35122 PADUA,ITALY

[3] SCUOLA INT SUPER STUDI AVANZATI,I-3401 TRIESTE,ITALY

来源：

GENERAL RELATIVITY AND GRAVITATION | 1991年 / 23卷 / 05期

关键词：

D O I：

10.1007/BF00758012

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the radial motion along null geodesics in the Reissner-Nordstrom-de Sitter and Kerr-de Sitter space-times. We analyze the properties of the effective potential and we discuss circular orbits. We find that: 1) the radius of circular photon orbits in the Reissner-Nordstrom-de Sitter space-times does not depend on the cosmological constant. We show also how this is related to properties of the optical reference geometry. 2) For a specific range of the cosmological constant, photons with high impact parameter may travel radially between the cosmological horizon and the black hole horizon in the equatorial plane of the Kerr-de Sitter space-times.

引用

页码：507 / 519

页数：13

共 11 条

[1]

ABRAMOWICZ MA, 1990, MON NOT R ASTRON SOC, V245, P720

[2] OPTICAL REFERENCE GEOMETRY FOR STATIONARY AND STATIC DYNAMICS [J].