English
Related papers

Related papers: Deriving Weak Deflection Angle by Black Holes or W…

200 papers

In this work, we investigate the weak deflection angle of light from exact black hole within the non-linear electrodynamics. First we calculate the Gaussian optical curvature using the optical spacetime geometry. With the help of modern…

General Relativity and Quantum Cosmology · Physics 2020-05-20 Wajiha Javed , Ali Hamza , Ali Övgün

In this paper, we calculate the weak deflection angle by Casimir wormhole and its shadow. To do so, we derive the Gaussian optical curvature and use the Gauss-Bonnet theorem. Then we find the deflection angle by Casimir wormhole in weak…

General Relativity and Quantum Cosmology · Physics 2021-01-13 Wajiha Javed , Ali Hamza , Ali Övgün

We study the light rays in a static and spherically symmetric gravitational field of null aether theory (NAT). To this end, we employ the Gauss-Bonnet theorem to compute the deflection angle by a NAT black hole in the weak limit…

General Relativity and Quantum Cosmology · Physics 2021-01-12 A. Övgün , İ. Sakallı , J. Saavedra

This paper investigates the novel phenomenon of gravitational lensing experienced by gravitational waves traveling past a Schwarzschild black hole perturbed by a specific, first-order, polar gravitational wave. We utilize the Gauss-Bonnet…

General Relativity and Quantum Cosmology · Physics 2024-08-23 Reggie C. Pantig , Ali Övgün

In this paper, we study the weak gravitational deflection angle of relativistic massive particles by the Kerr-like black hole in the bumblebee gravity model. In particular, we focus on weak field limits and calculate the deflection angle…

General Relativity and Quantum Cosmology · Physics 2020-01-23 Zonghai Li , Ali Övgün

In this paper, we study the weak deflection angle of black hole in effective loop quantum gravity using the geometrical technique used by Gibbons and Werner. We first derive the optical metric, calculate the Gaussian optical curvature, and…

General Relativity and Quantum Cosmology · Physics 2022-11-01 Wajiha Javed , Mehak Atique , Ali Övgün

Wormholes are one of the most interesting topological features in spacetime, offering a rat run between two vastly separated regions of the universe. In this paper, we study the deflection angle of light by wormholes, which are supported by…

General Relativity and Quantum Cosmology · Physics 2019-09-04 Kimet Jusufi , Ali Övgün , Ayan Banerjee , İzzet Sakallı

Based on the Jacobi metric method, this paper studies the deflection of a charged massive particle by a novel four-dimensional charged Einstein-Gauss-Bonnet black hole. We focus on the weak field approximation and consider the deflection…

General Relativity and Quantum Cosmology · Physics 2022-09-28 Zonghai Li , Yujie Duan , Junji Jia

We apply the Gauss-Bonnet theorem to the study of light rays in a plasma medium in a static and spherically symmetric gravitational field and also to the study of timelike geodesics followed for test massive particles in a spacetime with…

General Relativity and Quantum Cosmology · Physics 2018-06-13 Gabriel Crisnejo , Emanuel Gallo

We study the weak gravitational lensing effect of Non-Bocharova-Bronnikov-Melnikov-Bekenstein (BBMB) black hole in new massive conformal gravity. We analyze the deflection angle of light caused by new massive conformal gravity by using the…

General Relativity and Quantum Cosmology · Physics 2023-06-14 Muhammad Yasir , Xia Tiecheng , Farzan Mushtaq , Kazuharu Bamba

In this letter we apply the Gauss--Bonnet theorem (GB) to calculate the deflection angle by a quantum corrected Schwarzschild black hole in the weak limit approximation. In particular we calculate the light deflection by two types of…

General Relativity and Quantum Cosmology · Physics 2017-06-09 Kimet Jusufi

In this article, we study the weak gravitational lensing in the background of regular, static, spherically symmetric black hole solutions of Einstein's standard general relativity coupled with nonlinear electrodynamics. The weak deflection…

General Relativity and Quantum Cosmology · Physics 2025-09-04 Susmita Sarkar , Nayan Sarkar , Hasrat Hussian Shah , Pankaj Balo , Farook Rahaman

In this work, we study the weak gravitational lensing in the background of Kerr-Newman black hole with quintessential dark energy. Initially, we compute the deflection angle of light by charged black hole with quintessential dark energy by…

General Relativity and Quantum Cosmology · Physics 2020-08-03 W. Javed , J. Abbas , A. Övgün

In this paper, we use the Gauss Bonnet theorem to obtain the deflection angle by the photons coupled to Weyl tensor in a Schwarzschild black hole and Schwarzschild-like black hole in bumblebee gravity in the weak limit approximation. To do…

General Relativity and Quantum Cosmology · Physics 2018-10-31 Ali Övgün , Kimet Jusufi , Izzet Sakalli

We study the weak-field deflection of light by mass distributions described by two-power-law densities $\rho(R)=\rho_0 R^{-\alpha}(R+1)^{\beta-\alpha}$, where $\alpha$ and $\beta$ are non-negative integers. New analytic expressions of…

General Relativity and Quantum Cosmology · Physics 2019-06-19 Karlo de Leon , Ian Vega

In this paper, the gravitational deflection of relativistic massive particles up to the second post-Minkowskian order by static and spherically symmetric wormholes is investigated in the weak-field limit. These wormholes include the…

General Relativity and Quantum Cosmology · Physics 2020-02-05 Zonghai Li , Guansheng He , Tao Zhou

In this paper, we study light rays in a Kazakov-Solodukhin black hole. To this end, we use the optical geometry of the Kazakov-Solodukhin black hole within the Gauss-bonnet theorem. We first show the effect of the deformation parameter $a$…

General Relativity and Quantum Cosmology · Physics 2022-01-26 Wajiha Javed , Iqra Hussain , Ali Övgün

In this paper the problem of gravitational deflection of relativistic charged massive particles in slowly rotating Kerr-Newman black holes is considered. Toward this purpose we have used two methods: Firstly, we have applied the…

General Relativity and Quantum Cosmology · Physics 2019-07-01 Kimet Jusufi

Using a new geometrical approach introduced by Gibbons and Werner we study the deflection angle by Reissner-Nordstr\"{o}m black holes in the background spacetimes with a global monopole and a cosmic string. By calculating the corresponding…

General Relativity and Quantum Cosmology · Physics 2015-12-18 Kimet Jusufi

In this paper, we have discussed the effects of quantum fluctuations spewed by a black hole on its deflection angle. The Gauss-Bonnet theorem (GBT) is exploited with quantum corrections through the Extended Uncertainty Principle (EUP) and…

General Relativity and Quantum Cosmology · Physics 2019-12-16 Yashmitha Kumaran , Ali Övgün