Photon sphere and perihelion shift in weak f(T) gravity

被引：73

作者：

Bahamonde, Sebastian ^{[1
,2
]}

Flathmann, Kai ^{[3
]}

Pfeifer, Christian ^{[1
]}

机构：

[1] Univ Tartu, Inst Phys, Lab Theoret Phys, W Ostwaldi 1, EE-50411 Tartu, Estonia

[2] UCL, Dept Math, Gower St, London WC1E 6BT, England

[3] Carl von Ossietzky Univ Oldenburg, Dept Phys, D-26111 Oldenburg, Germany

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 08期

关键词：

D O I：

10.1103/PhysRevD.100.084064

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Among modified theories of gravity, the teleparallel f(T) gravity is an intensively discussed model in the literature. The best way to investigate its viability is to derive observable predictions which yield evidence or constraints for the model, when compared with actual observations. In this paper we derive the photon sphere and the perihelion shift for weak f(T) perturbations of general relativity. We consistently calculate first order teleparallel perturbations of Schwarzschild and Minkowski spacetime geometry, with which we improve and extend existing results in the literature.

引用

页数：11

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