53 citations · 70 across the 8 of their papers we have counts for
8 papers
Emergent gravity from Michel flow with position dependent adiabatic index
Apashanka Das, Souvik Ghose, Tapas K. Das
Spherically symmetric, general relativistic Bondi accretion is known as the Michel flow. The stationary integral transonic solutions for the Michel flow has been constructed for mu…
Emergent gravity from nonlinear perturbation of spherical accretion with variable adiabatic index
Rohit Ghosh, Souvik Ghose, Biplab Raychaudhuri +2
The main aim of the present work is to demonstrate that the analogue gravity phenomena are not an artifact of linear perturbation, rather gravity-like effects emerge through the no…
On the spin dependence of the emergent gravity phenomena as observed in axially symmetric black hole accretion with spatially varying adiabatic index
Kalyanbrata Pal, Souvik Ghose, Ripon Sk +2
The present work addresses an axisymmetrically accreting black hole system from three perspectives: the astrophysical, the dynamical systems, and the emergent gravity standpoint. S…
Effect of spin on the dynamics of multi-component trans-relativistic accretion flows around Kerr black holes
Kalyanbrata Pal, Souvik Ghose, Shilpa Sarkar +1
We investigate the axially symmetric accretion of low angular momentum hydrodynamic matter onto a rotating black hole. The gravitational field under consideration is assumed to be…
Spherical accretion in the Schwarzschild spacetime in the Newtonian analogous construct
Shubhrangshu Ghosh, Souvik Ghose, Kalyanbrata Pal +2
The velocity-dependent Newtonian analogous potentials (NAPs) corresponding to general relativistic (GR) spacetimes accurately capture most of the relativistic features, including a…
Gravity as emergent phenomena for spherically symmetric black hole accretion of multi-component flow with relativistic equation of state
Tuhin Paul, Aishee Chakraborty, Souvik Ghose +1
We investigate analogue gravity phenomena arising as a result of the linear perturbation of the spherically symmetric accretion flows onto non rotating black holes, where the gravi…
Multiple accretion events as a trigger for Sgr A* activity
Bozena Czerny, Devaky Kunneriath, Vladimir Karas +1
Gas clouds are present in the Galactic centre, where they orbit around the supermassive black hole. Collisions between these clumps reduce their angular momentum, and as a result s…
Black-Hole Accretion Disc as an Analogue Gravity Model
Tapas Kumar Das, Neven Bilic, Surajit Dasgupta
We formulate and solve the equations governing the transonic behaviour of a general relativistic black-hole accretion disc with non-zero advection velocity. We demonstrate that a r…