147 citations · 530 across the 10 of their papers we have counts for
10 papers
Exploring Nonlinear Electrodynamics Theories: Shadows of Regular Black Holes and Horizonless Ultra-Compact Objects
Rahul Kumar Walia
In the Einstein-Maxwell theory with nonlinear electrodynamics (NED) fields, the singularity problem in general relativity is potentially resolved, leading to regular black hole sol…
Testing Strong Gravitational Lensing Effects of Supermassive Black Holes with String-Inspired Metric: Observational Signatures and EHT Constraints
Amnish Vachher, Shafqat Ul Islam, Rahul Kumar Walia +1
We analyze gravitational lensing in the strong field limit for spherically symmetric string-inspired Euler-Heisenberg black holes, characterized by magnetic charge () and Einste…
Investigating Loop Quantum Gravity with EHT Observational Effects of Rotating Black holes
Shafqat Ul Islam, Jitendra Kumar, Rahul Kumar Walia +1
A mathematically consistent rotating black hole model in loop quantum gravity (LQG) is yet lacking. The scarcity of rotating black hole solutions in LQG substantially hampers the d…
Observational predictions of LQG motivated polymerized black holes and constraints from Sgr A* and M87*
Rahul Kumar Walia
Loop quantum gravity inspired partial polymer quantization in four-dimensional spacetime leads to a globally regular black hole with a single horizon. The polymerized black hole me…
Testing Rotating Regular Metrics with EHT Results of Sgr A*
Rahul Kumar Walia, Sushant G Ghosh, Sunil D Maharaj
The Event Horizon Telescope (EHT) observation unveiled the first image of supermassive black hole Sgr A* showing a shadow of diameter as with fractional devi…
Shadows of Kerr-like black holes in Einstein-Gauss-Bonnet gravity and constraints from EHT observations
Sushant G. Ghosh, Rahul Kumar Walia
The M87* black hole shadow observation by the Event Horizon Telescope (EHT) has enabled us to test the modified gravity theories in the extreme-field regime and estimating the blac…
Field sources for Simpson-Visser space-times
Kirill A. Bronnikov, Rahul Kumar Walia
Simpson-Visser (SV) space-times are the simplest globally regular modifications of the Schwarzschild, Reissner-Nordstrom and other blak-hole solutions of general relativity. They s…
Rotating black holes in general relativity coupled to nonlinear electrodynamics
Sushant G. Ghosh, Rahul Kumar walia
We find an exact spherically symmetric magnetically charged black hole solution to general relativity (GR) coupled to nonlinear electrodynamics (NED) with an appropriate Lagrangian…
Rotating Black Holes in Horndeski Gravity: Thermodynamic and Gravitational Lensing
Rahul Kumar Walia, Sunil D. Maharaj, Sushant G. Ghosh
The lack of rotating black holes, typically found in nature, hinders testing modified gravity from astrophysical observations. We present the axially symmetric counterpart of an ex…
Bardeen Black Holes in the Regularized Einstein--Gauss--Bonnet Gravity
Arun Kumar, Rahul Kumar Walia, Sushant G. Ghosh
We obtain exact Bardeen black holes to the regularized Einstein--Gauss--Bonnet (EGB) gravity minimally coupled with the nonlinear electrodynamics (NED). In turn, we analyze th…