152 citations · 2.3k across the 156 of their papers we have counts for
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Stochastically driven instability in rotating shear flows
Banibrata Mukhopadhyay, Amit K. Chattopadhyay
Origin of hydrodynamic turbulence in rotating shear flows is investigated. The particular emphasis is the flows whose angular velocity decreases but specific angular momentum incre…
Observational evidences for spinning black holes: A proof of general relativity for spacetime around rotating black holes
Banibrata Mukhopadhyay, Debbijoy Bhattacharya, P. Sreekumar
Since it was theorized by Kerr in 1963, determining the spin of black holes from observed data was paid very little attention until few years back. The main reasons behind this wer…
Violation of Chandrasekhar Mass Limit: The Exciting Potential of Strongly Magnetized White Dwarfs
Upasana Das, Banibrata Mukhopadhyay
We consider a relativistic, degenerate, electron gas under the influence of a strong magnetic field, which describes magnetized white dwarfs. Landau quantization changes the densit…
Mass of highly magnetized white dwarfs exceeding the Chandrasekhar limit: An analytical view
Aritra Kundu, Banibrata Mukhopadhyay
In recent years a number of white dwarfs has been observed with very high surface magnetic fields. We can expect that the magnetic field in the core of these stars would be much hi…
Variation of the gas and radiation content in the sub-Keplerian accretion disk around black holes and its impact to the solutions
Banibrata Mukhopadhyay, Parikshit Dutta
We investigate the variation of the gas and the radiation pressure in accretion disks during the infall of matter to the black hole and its effect to the flow. While the flow far a…
Can the viscosity in astrophysical black hole accretion disks be close to its string theory bound?
Banibrata Mukhopadhyay
String theory and gauge/gravity duality suggest the lower bound of shear viscosity (eta) to entropy density (s) for any matter to be ~ mu hbar/4pi k_B, when hbar and k_B are reduce…
Strongly magnetized cold electron degenerate gas: Mass-radius relation of the magnetized white dwarf
Upasana Das, Banibrata Mukhopadhyay
We consider a relativistic, degenerate electron gas at zero-temperature under the influence of a strong, uniform, static magnetic field, neglecting any form of interactions. Since…
Gauging gravity with SO(1,3) for spin-1/2 particles
Arpan Saha, Banibrata Mukhopadhyay
We demonstrate, by analogy with electromagnetism, that the geometric content in the theory of gravity is an indirect consequence of the fact that the gauge group in question is the…