37 citations · 96 across the 3 of their papers we have counts for
5 papers · 1 filter
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…
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…
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…