189 citations · 712 across the 16 of their papers we have counts for
17 papers
Probing Kalb-Ramond gravity with charged rotating black holes: constraints from EHT observations
Towheed Ahmad Nengroo, Shafqat Ul Islam, Sushant G. Ghosh
The Event Horizon Telescope (EHT) has guided strong-field gravitational physics by providing the first direct images of the supermassive black holes M87* and Sagittarius A*. The EH…
Probing Lorentz Symmetry Violation through Lensing Observables of Rotating Black Holes
Arun Kumar, Shafqat Ul Islam, Sushant G. Ghosh
We find a Kerr-like black hole solution-a rotating Bumblebee black hole (RBBH) with a Lorentz-violating parameter and examine the strong lensing by it. The parameter …
Photon orbits and phase transition for gravitational decoupled Kerr anti-de Sitter black holes
Suhail Khan, Shafqat Ul Islam, Sushant G. Ghosh +1
Interpreting the cosmological constant as the energy of the vacuum and using a gravitational decoupling approach leads to a new Kerr--anti-de Sitter (AdS) black hole. The metric of…
Investigating Rotating Black Holes in Bumblebee Gravity: Insights from EHT Observations
Shafqat Ul Islam, Sushant G. Ghosh, Sunil D. Maharaj
The EHT observation revealed event horizon-scale images of the supermassive black holes Sgr A* and M87* and these results are consistent with the shadow of a Kerr black hole as pre…
Shadows and parameter estimation of rotating quantum corrected black holes and constraints from EHT observation of M87* and Sgr A*
Heena Ali, Shafqat Ul Islam, Sushant G. Ghosh
The scarcity of quantum gravity (QG) inspired rotating black holes limits the progress of testing QG through Event Horizon Telescope (EHT) observations. The EHT imaged the supermas…
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…
Rotating Kiselev Black Holes in Gravity
Sushant G. Ghosh, Shafqat Ul Islam, Sunil D. Maharaj
Exact solutions describing rotating black holes can provide significant opportunities for testing modified theories of gravity, which are motivated by the challenges posed by dark…
Strong Gravitational Lensing by Loop Quantum Gravity Motivated Rotating Black Holes and EHT Observations
Jitendra Kumar, Shafqat Ul Islam, Sushant G. Ghosh
We investigate gravitational lensing in the strong deflection regime by loop quantum gravity (LQG)-motivated rotating black hole (LMRBH) metrics with an additional parameter be…
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…
Loop Quantum Gravity motivated multihorizon rotating black holes
Jitendra Kumar, Shafqat Ul Islam, Sushant G. Ghosh
With a semiclassical polymerization in the loop quantum gravity (LQG), the interior of Schwarzschild black holes provides a captivating single-horizon regular black hole spacetime.…
Strong gravitational lensing by Bardeen black holes in 4D EGB gravity: constraints from supermassive black holes
Shafqat Ul Islam, Sushant G. Ghosh, Sunil D. Maharaj
Observation indicates that many nearby galaxies host supermassive central black holes. Modelling Bardeen models in four-dimensional Einstein-Gauss-Bonnet (4D EGB) gravity, with add…
Investigating strong gravitational lensing effects by suppermassive black holes with Horndeski gravity
Jitendra Kumar, Shafqat Ul Islam, Sushant G. Ghosh
We study gravitational lensing in strong-field limit by a static spherically symmetric black hole in quartic scalar field Horndeski gravity having additional hair parameter , ev…
Strong gravitational lensing by rotating Simpson--Visser black holes
Shafqat Ul Islam, Jitendra Kumar, Sushant G. Ghosh
We investigate strong field gravitational lensing by rotating Simpson-Visser black hole, which has an additional parameter (), apart from mass () and rotation…
Strong field gravitational lensing by hairy Kerr black holes
Shafqat Ul Islam, Sushant G. Ghosh
Recent times witnessed a surge of interest in strong gravitational lensing by black holes due to the Event Horizon Telescope (EHT) results, which suggest comparing the black hole l…
Parameters estimation and strong gravitational lensing of nonsingular Kerr-Sen black holes
Sushant G. Ghosh, Rahul Kumar, Shafqat Ul Islam
The recent time witnessed a surge of interest in strong gravitational lensing by black holes is due to the Event Horizon Telescope (EHT) results, which suggest comparing the black…
Gravitational lensing by charged black hole in regularized Einstein-Gauss-Bonnet gravity
Rahul Kumar, Shafqat Ul Islam, Sushant G. Ghosh
Among the higher curvature gravities, the most extensively studied theory is the so-called Einstein-Gauss-Bonnet (EGB) gravity, whose Lagrangian contains Einstein term with the GB…
Gravitational lensing by black holes in the Einstein-Gauss-Bonnet gravity
Shafqat Ul Islam, Rahul Kumar, Sushant G. Ghosh
Recently, a non-trivial Einstein-Gauss-Bonnet (EGB) theory of gravity, by rescaling the GB coupling parameter as , was formulated in \cite{Glavan:2019inb}, which bypa…