209 citations · 665 across the 9 of their papers we have counts for
9 papers
Testing EGB gravity coupled to bumblebee field and black hole parameter estimation with EHT observations
Misba Afrin, Sushant G. Ghosh, Anzhong Wang
A general covariant Einstein-Gauss-Bonnet Gravity in Four-Dimensional (4D EGB) spacetime is shown to bypass Lovelock's theorem and is free from Ostrogradsky instability. Meanwhile,…
EHT observables as a tool to estimate parameters of supermassive black holes
Misba Afrin, Sushant G. Ghosh
The Event Horizon Telescope (EHT) collaboration unveiled event-horizon-scale images of the supermassive black holes (SMBHs) M87* and Sgr A*, revealing a dark brightness depression,…
Investigating effects of dark matter on photon orbits and black hole shadows
Arshia Anjum, Misba Afrin, Sushant G. Ghosh
We consider Kerr black holes (BHs) surrounded by perfect dark fluid matter (PFDM), with an additional parameter () because of PFDM, apart from mass () and rotation parameter…
Tests of Loop Quantum Gravity from the Event Horizon Telescope Results of Sgr A
Misba Afrin, Sunny Vagnozzi, Sushant G. Ghosh
The Event Horizon Telescope (EHT) collaboration's image of the compact object at the galactic center is the first direct evidence of the supermassive black hole (BH) Sgr A. The…
An Upper Limit on the Charge of the Black Hole Sgr A* from EHT Observations
Sushant G. Ghosh, Misba Afrin
The Event Horizon Telescope (EHT) recently released an image of the supermassive black hole Sgr A* showing an angular shadow diameter as and Schwarzschild sh…
Estimating the cosmological constant from shadows of Kerr--de Sitter black holes
Misba Afrin, Sushant G. Ghosh
The Event Horizon Telescope collaboration has revealed the first direct image of a black hole, as per the shadow of a Kerr black hole of general relativity. However, other Kerr-lik…
Testing Horndeski Gravity from EHT Observational Results for Rotating Black Holes
Misba Afrin, Sushant G. Ghosh
The Event Horizon Telescope (EHT) collaboration recently unveiled the first image of the supermassive black hole M87*, which exhibited a ring of angular diameter $θ_{d}=42 \pm 3 μa…
Parameter estimation of hairy Kerr black holes from its shadow and constraints from M87*
Misba Afrin, Rahul Kumar, Sushant G. Ghosh
The recently obtained hairy Kerr black holes, due to additional sources or surrounding fluid, like dark matter, with conserved energy-momentum tensor, have a deviation and prim…
Quantum Coherence and Path-Distinguishability of Two Entangled Particles
Misba Afrin, Tabish Qureshi
An interference experiment with entangled particles is theoretically analyzed, where one of the entangled pair (particle 1) goes through a multi-slit before being detected at a fix…