Weak gravitational lensing of Dilaton-de Sitter black holes

被引：0
作者：
M. A. Mojahedi
机构：
[1] Payame Noor University,Department of Physics
来源：
General Relativity and Gravitation | 2017年 / 49卷
关键词：
Cosmological constant; Scalar field; Deflection angle; Rindler Ishak model;
D O I：
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学科分类号：
摘要：
In this work, we examine the effects of the cosmological constant and a scalar field on the angle of deflection of null geodesics in the equatorial plane of the Dilaton-de Sitter space–time. We employ the Rindler–Ishak method to compute the gravitational lensing. We derive new limits on the value of the cosmological constant, Λ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\Lambda $$\end{document}, based on the bending of light by systems where the lens is a distant galaxy or a cluster of galaxies. These results are essential and important for studies of cosmology.
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