Issue |
EPL
Volume 145, Number 5, March 2024
|
|
---|---|---|
Article Number | 59002 | |
Number of page(s) | 7 | |
Section | Gravitation, cosmology and astrophysics | |
DOI | https://doi.org/10.1209/0295-5075/ad2729 | |
Published online | 19 March 2024 |
Weak gravitational lensing by multi-horizons black hole
1 Department of Mathematics, Shanghai University and Newtouch Center for Mathematics of Shanghai University Shanghai, 200444, PRC
2 Department of Mathematics, COMSATS University Islamabad, Lahore Campus - Lahore, 54000, Pakistan
Received: 16 November 2023
Accepted: 7 February 2024
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.
© 2024 EPLA
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