72 citations · 133 across the 22 of their papers we have counts for
11 papers · 1 filter
Strong Gravitational Lensing by a Black Hole with a Global Monopole in Kalb-Ramond Bumblebee Gravity
Bijendra Kumar Vishvakarma, Shubham Kala
We investigate the strong gravitational lensing and shadow properties of the black hole in the context of bumblebee gravity, characterized by a global monopole charge and a…
Geodesics and Light Deflection in Schwarzschild-like Spacetime from Cosmology-Inspired Modified Gravity
Ritesh Pandey, Shubham Kala, Amare Abebe +2
We investigate cosmology-driven modifications to Schwarzschild-like black hole spacetimes and analyze their impact on photon propagation, gravitational lensing, and shadow observat…
Gravitational Lensing and Topological Photon Sphere of Holonomy Corrected Schwarzschild Black Hole with a Cloud of Strings
Faizuddin Ahmed, Shubham Kala
In this paper, we theoretically investigate the deflection of light, lensing equations, topological properties of photon rings, and accretion disk characteristics in the spacetime…
Gravitational lensing and shadow around a non-minimally coupled Horndeski black hole in plasma medium
Shubham Kala, Jaswinder Singh
We investigate the light deflection and the shadow characteristics of a non-minimally coupled Horndeski black hole surrounded by a magnetized, cold, pressureless plasma medium, whi…
Equatorial light bending around a Hairy Kiselev Black Hole
Shrishti Kukreti, Shubham Kala, Hemwati Nandan +2
We investigate the deflection angle of light rays confined to the equatorial plane of a Hairy Kiselev black hole. The analysis includes a thorough study of the horizon structure an…
Non-Equatorial Deflection of Light due to Kerr-Newman Black Hole: A Material Medium Approach
Saswati Roy, Shubham Kala, Prasanjit Ghosh +2
We explored the effect of space-time geometry on the trajectory of light rays in the context of a charged, rotating black hole. We derived an analytical expression for the deflecti…
Deflection of Light due to Kerr Sen Black Hole in Heterotic String Theory using Material Medium Approach
Saswati Roy, Shubham Kala, Atanu Singha +2
The deflection of light in the gravitational field of a massive body can be analyzed through diverse theoretical approaches. The null geodesic approach is commonly employed to calc…
Quasinormal modes of a dyonic black hole in Einstein-Euler-Heisenberg theory
Shubham Kala, Abhishek Negi, Hemwati Nandan
In this study, we investigate the quasinormal modes of a non-rotating dyonic black hole within the framework of Einstein-Euler-Heisenberg theory. We present a detailed analysis foc…
Null Geodesics, Thermodynamics, Weak Gravitational Lensing, and Black Hole Shadow Characteristics of a Frolov Regular Black Hole with Constraints from EHT Observations
Shubham Kala, Hemwati Nandan, Kush Maithani +2
In this paper, we investigate the properties of null geodesics, thermodynamics, gravitational lensing, and black hole shadows in the vicinity of a static regular Frolov black hole.…
QNMs of charged black holes in AdS spacetime: a geometrical optics perspective
Shubham Kala, Anik Rudra, Hemwati Nandan
We investigate the quasinormal modes of the ReissnerNordström antide Sitter black hole using the Penrose limit, motivated by the geometrical optics approximation. This approa…
Propagation of massless particles around a BTZ-ModMax black hole
Shubham Kala
We investigate the deflection of light around a BTZ-ModMax black hole, focusing on the influence of the ModMax parameter and the cosmological constant. The trajectories of massless…