Weak gravitational lensing by multi-horizons black hole

We investigate the weak gravitational lensing caused by multi-horizon black hole (MHBH) on light. Using the Gauss-Bonnet theorem, which demonstrates that light bending is a topological and global phenomenon, we are able to deduce the deflection angle of light in the weak field limits. First, we use...

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Bibliographic Details
Published inEurophysics letters Vol. 145; no. 5; pp. 59002 - 59008
Main Authors Mushtaq, Farzan, Tiecheng, Xia, Yasir, Muhammad, Ahsan, Aitazaz
Format Journal Article
LanguageEnglish
Published Les Ulis EDP Sciences, IOP Publishing and Società Italiana di Fisica 01.03.2024
IOP Publishing
Subjects
Deflection
Gravitational lenses
Theorems
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ISSN0295-5075
1286-4854
DOI10.1209/0295-5075/ad2729

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Summary:We investigate the weak gravitational lensing caused by multi-horizon black hole (MHBH) on light. Using the Gauss-Bonnet theorem, which demonstrates that light bending is a topological and global phenomenon, we are able to deduce the deflection angle of light in the weak field limits. First, we use the Gauss-Bonnet theorem to estimate the Gaussian optical curvature and determine the MHBH deflection angle for spherically balanced spacetime. Further, we evaluate the deflection angle of light within the plasma medium framework. Likewise, the impact of plasma and the non-plasma medium clearly illustrate the dynamics of the deflection angle by multi-horizons black hole.
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ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/ad2729