73 citations · 422 across the 12 of their papers we have counts for
12 papers
Probing astrophysical environment with eccentric extreme mass-ratio inspirals
Mostafizur Rahman, Shailesh Kumar, Arpan Bhattacharyya
The discovery of gravitational waves and black holes has started a new era of gravitational wave astronomy that allows us to probe the underpinning features of gravity and astrophy…
Traversable wormholes in bi-metric gravity
Mostafizur Rahman, Anjan A Sen, Sunil Singh Bohra
The ghost-free bi-metric gravity theory is a viable theory of gravity that explores the interaction between a massless and a massive graviton and can be described in terms of two d…
Perturbing the perturbed: Stability of quasinormal modes in presence of a positive cosmological constant
Subhodeep Sarkar, Mostafizur Rahman, Sumanta Chakraborty
In this work, we wish to address the question -- whether the quasi-normal modes, the characteristic frequencies associated with perturbed black hole spacetimes, central to the stab…
Regularized Stable Kerr Black Hole: Cosmic Censorships, Shadow and Quasi-Normal Modes
Rajes Ghosh, Mostafizur Rahman, Akash K Mishra
Black hole solutions in general relativity come with pathologies such as singularity and mass inflation instability, which are believed to be cured by a yet-to-be-found quantum the…
Echoes from braneworld wormholes
Shauvik Biswas, Mostafizur Rahman, Sumanta Chakraborty
We have studied the stability of wormhole geometries, under massless scalar, electromagnetic and axial gravitational perturbations, in the context of higher dimensional spacetimes.…
Prospects for determining the nature of the secondaries of extreme mass-ratio inspirals using the spin-induced quadrupole deformation
Mostafizur Rahman, Arpan Bhattacharyya
The measurement of multipole moments of astrophysical objects through gravitational wave (GW) observations provides a novel way to distinguish black holes from other astrophysical…
Ringdown of Charged Compact Objects using Membrane Paradigm
Mostafizur Rahman, Arpan Bhattacharyya
Although the black holes are an integral part of the standard model of astrophysics and cosmology, their existence poses some serious fundamental problems. In recent years, several…
Strong cosmic censorship conjecture with NUT charge and conformal coupling
Mostafizur Rahman, Soumodeep Mitra, Sumanta Chakraborty
Strong cosmic censorship conjecture is central to the deterministic nature of general relativity, since it asserts that given any generic initial data on a spacelike hypersurface,…
On the validity of Strong Cosmic Censorship Conjecture in presence of Dirac fields
Mostafizur Rahman
A well posed theory of nature is expected to determine the future of an observer uniquely from a given set of appropriate initial data. In the context of general relativity, this i…
Fate of Strong Cosmic Censorship Conjecture in Presence of Higher Spacetime Dimensions
Mostafizur Rahman, Sumanta Chakraborty, Soumitra SenGupta +1
Strong cosmic censorship conjecture has been one of the most important leap of faith in the context of general relativity, providing assurance in the deterministic nature of the as…
Astrophysical Signatures of Black holes in Generalized Proca Theories
Mostafizur Rahman, Anjan A. Sen
Explaining the late time acceleration is one of the most challenging tasks for theoretical physicists today. Infra-red modification of Einstein's general theory of relativity (GR)…
Black Hole Topology in Gravity
Akash K Mishra, Mostafizur Rahman, Sudipta Sarkar
Hawking's topology theorem in general relativity restricts the cross-section of the event horizon of a black hole in dimension to be either spherical or toroidal. The toroida…