76 citations · 1k across the 85 of their papers we have counts for
6 papers · 1 filter
Mini-spiral as source of material for Sgr A* in bright state
Bozena Czerny, Vladimir Karas, Devaky Kunneriath +1
The question of the origin of the gas supplying the accretion process is pertinent especially in the context of enhanced activity of Galactic Center during the past few hundred yea…
Black Hole spin dependence of general relativistic multi-transonic accretion close to the horizon
Tapas K. Das, Sankhasubhra Nag, Swathi Hegde +7
We introduce a novel formalism to investigate the role of the spin angular momentum of astrophysical black holes in influencing the behaviour of low angular momentum general relati…
The role of axisymmetric flow configuration in the estimation of the analogue surface gravity and related Hawking like temperature
Neven Bilic, Arpita Choudhary, Tapas K Das +1
For axially symmetric flow of dissipationless inhomogeneous fluid onto a non rotating astrophysical black hole under the influence of a generalized pseudo-Schwarzschild gravitation…
On Spin Dependence of Relativistic Acoustic Geometry
Hung-Yi Pu, Ishita Maiti, Tapas Kumar Das +1
This work makes the first ever attempt to understand the influence of the black hole background space-time in determining the fundamental properties of the embedded relativistic ac…
An Analytical Study on the Multi-critical Behaviour and Related Bifurcation Phenomena for Relativistic Black Hole Accretion
Shilpi Agarwal, Tapas K. Das, Rukmini Dey +1
We apply the theory of algebraic polynomials to analytically study the transonic properties of general relativistic hydrodynamic axisymmetric accretion onto non-rotating astrophysi…
QPO in RE J1034+396: model constraints from observed trends
B. Czerny, P. Lachowicz, M. Dovciak +3
We analyze the time variability of the X-ray emission of RE J1034+396, an active galactic nucleus with the first firm detection of a quasi-periodic oscillations (QPO). Based on the…