Weak gravitational lensing by Kerr-MOG black hole and Gauss-Bonnet theorem

被引：59

作者：

Ovgun, Ali ^{[1
,2
]}

Sakalli, Izzet ^{[2
]}

Saavedra, Joel ^{[1
]}

机构：

[1] Pontificia Univ Catolica Valparaiso, Inst Fis, Casilla 4950, Valparaiso, Chile

[2] Eastern Mediterranean Univ, Arts & Sci Fac, Dept Phys, Via Mersin 10, Famagusta, North Cyprus, Turkey

来源：

ANNALS OF PHYSICS | 2019年 / 411卷

关键词：

Light deflection; Gauss-Bonnet theorem; Gravitational lensing; Black hole; MODIFIED GRAVITY; FIELD;

D O I：

10.1016/j.aop.2019.167978

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The deflection angle of Kerr-MOG black holes is studied for different values of the parameter in modified gravity (MOG). To this end, we employ the Gauss-Bonnet theorem, which was first studied by Gibbons and Werner and then extended by Ono, lshihara and Asada, who use a generalized optical metric where the deflection of light for an observer and source at finite distance. By using this method, we study the weak gravitational lensing by Kerr-MOG black hole. Our computations show that with an increase in the MOG parameter (alpha), the deflection angle becomes significantly larger than that of Kerr black hole. The results obtained show that MOG effect could be taken into account in the gravitational lensing experiments. (C) 2019 Elsevier Inc. All rights reserved.

引用

页数：10

共 67 条

[1] Aitken R G, 1964, BINARY STARS
[2] Light deflection and Gauss-Bonnet theorem: definition of total deflection angle and its applications
Arakida, Hideyoshi
[J]. GENERAL RELATIVITY AND GRAVITATION, 2018, 50 (05)
[3] Weak gravitational lensing
Bartelmann, M
Schneider, P
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2001, 340 (4-5): : 291 - 472
[4] Strong deflection limit of black hole gravitational lensing with arbitrary source distances
Bozza, V.
Scarpetta, G.
[J]. PHYSICAL REVIEW D, 2007, 76 (08)
[5] Gravitational lensing in the strong field limit
Bozza, V
[J]. PHYSICAL REVIEW D, 2002, 66 (10):
[6] Gravitational lensing by black holes
Bozza, Valerio
[J]. GENERAL RELATIVITY AND GRAVITATION, 2010, 42 (09) : 2269 - 2300
[7] The Bullet Cluster 1E0657-558 evidence shows modified gravity in the absence of dark matter
Brownstein, J. R.
Moffat, J. W.
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 382 (01) : 29 - 47
[8] Weak lensing in a plasma medium and gravitational deflection of massive particles using the Gauss-Bonnet theorem. A unified treatment
Crisnejo, Gabriel
Gallo, Emanuel
[J]. PHYSICAL REVIEW D, 2018, 97 (12)
[9] Photon spheres and sonic horizons in black holes from supergravity and other theories
Cvetic, M.
Gibbons, G. W.
Pope, C. N.
[J]. PHYSICAL REVIEW D, 2016, 94 (10)
[10] THE GRAVITY FIELD OF A PARTICLE
DARWIN, C
[J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1959, 249 (1257): : 180 - 194

← 1 2 3 4 5 6 7 →