Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Garain, Sudip K"'
Autor:
Garain, Sudip K, Dey, Pranayjit
Strong gravity in the immediate vicinity of compact objects (e.g., black holes, neutron stars) necessitates inclusion of general relativistic effects. Traditionally, pseudo-Newtonian potential representation of gravity were favored to simulate the fl
Externí odkaz:
http://arxiv.org/abs/2410.11484
Autor:
Garain, Sudip K, Kim, Jinho
We study the time evolution of sub-Keplerian transonic accretion flow onto a non-rotating black hole using a three-dimensional, inviscid hydrodynamics simulation code. Prior two-dimensional simulations show that centrifugal barrier in the accreting m
Externí odkaz:
http://arxiv.org/abs/2212.08310
Approximate multidimensional Riemann solvers are essential building blocks in designing globally constraint-preserving finite volume time domain (FVTD) and discontinuous Galerkin time domain (DGTD) schemes for computational electrodynamics (CED). In
Externí odkaz:
http://arxiv.org/abs/2211.09016
Magnetic fields advected along with low angular momentum accretion flows predominantly become toroidal due to the strong azimuthal velocity close to a black hole. We study self-consistently the movements of these flux tubes inside an advective disc a
Externí odkaz:
http://arxiv.org/abs/1911.12792
The small-scale turbulent dynamo is an important process contributing to the cosmic magnetization. In partially ionized astrophysical plasmas, the dynamo growth of magnetic energy strongly depends on the coupling state between ions and neutrals and t
Externí odkaz:
http://arxiv.org/abs/1901.02893
We study time evolution of sub-Keplerian transonic accretion flows onto black holes using a general relativistic numerical simulation code. We perform simulations around the black holes having non-zero rotation. We first compare one-dimensional simul
Externí odkaz:
http://arxiv.org/abs/1810.12469
Two Component Advective Flow (TCAF) successfully explains the spectral and tem- poral properties of outbursting or persistent sources. Images of static TCAF with Compton cloud or CENtrifugal pressure supported Boundary Layer (CENBOL) due to gravitati
Externí odkaz:
http://arxiv.org/abs/1802.10296
We study time evolution of sub-Keplerian transonic accretion flows onto black holes using a general relativistic numerical simulation code. We perform simulations in Schwarzschild spacetime. We first compare one-dimensional simulation results with th
Externí odkaz:
http://arxiv.org/abs/1707.09856
A black hole accretion is necessarily transonic. In presence of sufficiently high viscosity and cooling effects, a low-angular momentum transonic flow can become a standard Keplerian disc except close to the where hole where it must pass through the
Externí odkaz:
http://arxiv.org/abs/1502.00455
Publikováno v:
ASI Conference Series, 2013, Vol 8, pp 11 14
We study the spectral and timing properties of a two component advective flow (TCAF) around a black hole by numerical simulation. Several cases have been simulated by varying the Keplerian disk rate and the resulting spectra and lightcurves have been
Externí odkaz:
http://arxiv.org/abs/1311.5377