Truncated accretion discs in black hole X-ray binaries: dynamics and variability signatures
Variable features in black hole X-ray binaries (BH-XRBs) are observed in different energy
ranges and time-scales. The physical origin of different spectral states in BH-XRBs and their …
ranges and time-scales. The physical origin of different spectral states in BH-XRBs and their …
Unveiling the accretion scenario of BH-ULXs using XMM–Newton observations
S Majumder, S Das, VK Agrawal… - Monthly Notices of the …, 2023 - academic.oup.com
We present a comprehensive spectrotemporal analysis of five ultraluminous X-ray sources
(ULXs) with central object likely being a black hole, using archival XMM–Newton …
(ULXs) with central object likely being a black hole, using archival XMM–Newton …
Dynamical Properties of Magnetized Low-angular-momentum Accretion Flows around a Kerr Black Hole
IK Dihingia, Y Mizuno - The Astrophysical Journal, 2024 - iopscience.iop.org
An essential factor for determining the characteristics of an accretion flow is its angular
momentum. According to the angular momentum of the flow, semi-analytical analysis …
momentum. According to the angular momentum of the flow, semi-analytical analysis …
Relativistic viscous accretion flow model for ULX sources: a case study for IC 342 X-1
S Das, A Nandi, VK Agrawal, IK Dihingia… - Monthly Notices of …, 2021 - academic.oup.com
In this paper, we develop a model formalism to study the structure of a relativistic, viscous,
optically thin, advective accretion flow around a rotating black hole in presence of radiative …
optically thin, advective accretion flow around a rotating black hole in presence of radiative …
Study of relativistic accretion flow around KTN black hole with shocks
We present the global solutions of low angular momentum, inviscid, advective accretion flow
around Kerr-Taub-NUT (KTN) black hole in presence and absence of shock waves. These …
around Kerr-Taub-NUT (KTN) black hole in presence and absence of shock waves. These …
Estimation of mass outflow rates from viscous relativistic accretion discs around black holes
I Chattopadhyay, R Kumar - Monthly Notices of the Royal …, 2016 - academic.oup.com
We investigated flow in Schwarzschild metric, around a non-rotating black hole and
obtained self-consistent accretion–ejection solution in full general relativity. We covered the …
obtained self-consistent accretion–ejection solution in full general relativity. We covered the …
Study of general relativistic magnetohydrodynamic accretion flow around black holes
We present a novel approach to study the global structure of steady, axisymmetric,
advective, magnetohydrodynamic (MHD) accretion flow around black holes in full general …
advective, magnetohydrodynamic (MHD) accretion flow around black holes in full general …
Evolution of MHD torus and mass outflow around spinning AGNs
We perform axisymmetric, 2D magnetohydrodynamic simulations to investigate accretion
flows around spinning active galactic nuclei. To mimic the space–time geometry of spinning …
flows around spinning active galactic nuclei. To mimic the space–time geometry of spinning …
Accretion flow dynamics during 1999 outburst of XTE J1859+ 226—modeling of broadband spectra and constraining the source mass
A Nandi, S Mandal, H Sreehari, D Radhika… - Astrophysics and Space …, 2018 - Springer
We examine the dynamical behavior of accretion flow around XTE J1859+ 226 during the
1999 outburst by analyzing the entire outburst data (∼ 166 days) from RXTE Satellite …
1999 outburst by analyzing the entire outburst data (∼ 166 days) from RXTE Satellite …
Spiral shocks induced in a galactic gaseous disk: Hydrodynamic understanding of observational properties of spiral galaxies
Context. We investigate the properties of spiral shocks in a steady, adiabatic, non-
axisymmetric, self-gravitating, mass-outflowing accretion disk around a compact object …
axisymmetric, self-gravitating, mass-outflowing accretion disk around a compact object …