TY - JOUR

T1 - Weak deflection angle of Kazakov–Solodukhin black hole in plasma medium using Gauss–Bonnet theorem and its greybody bonding

AU - Javed, Wajiha

AU - Hussain, Iqra

AU - Övgün, Ali

N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.

PY - 2022/1

Y1 - 2022/1

N2 - 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 on the Gaussian optical curvature, and then, we use the modern method popularized by Gibbons and Werner to calculate the weak deflection angle of light. Our calculations of deflection angle show how gravitational lensing is affected by the deformation parameter a. Moreover, we demonstrate the effect of a plasma medium on weak gravitational lensing by the Kazakov–Solodukhin black hole. We discuss that the increasing the deformation parameter a will increase the weak deflection angle of the black hole. Our analysis also uncloak how one may find a observational evidence for a deformation parameter on the deflection angle. In addition, we studied the rigorous bounds of the Kazakov–Solodukhin black hole for the grey body factor and also studied the graphical behaviour of the bounds by fixing l= 0 and M= 1 and observed that increasing the deformation parameter a will decrease the rigorous bound Tb of the black hole.

AB - 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 on the Gaussian optical curvature, and then, we use the modern method popularized by Gibbons and Werner to calculate the weak deflection angle of light. Our calculations of deflection angle show how gravitational lensing is affected by the deformation parameter a. Moreover, we demonstrate the effect of a plasma medium on weak gravitational lensing by the Kazakov–Solodukhin black hole. We discuss that the increasing the deformation parameter a will increase the weak deflection angle of the black hole. Our analysis also uncloak how one may find a observational evidence for a deformation parameter on the deflection angle. In addition, we studied the rigorous bounds of the Kazakov–Solodukhin black hole for the grey body factor and also studied the graphical behaviour of the bounds by fixing l= 0 and M= 1 and observed that increasing the deformation parameter a will decrease the rigorous bound Tb of the black hole.

UR - http://www.scopus.com/inward/record.url?scp=85123423543&partnerID=8YFLogxK

U2 - 10.1140/epjp/s13360-022-02374-7

DO - 10.1140/epjp/s13360-022-02374-7

M3 - Article

AN - SCOPUS:85123423543

SN - 2190-5444

VL - 137

JO - European Physical Journal Plus

JF - European Physical Journal Plus

IS - 1

M1 - 148

ER -