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 …

Time delays between radio and X-ray and between narrow radio bands of Sgr A* flares in the shock oscillation model

T Okuda, CB Singh, R Aktar - Monthly Notices of the Royal …, 2023 - academic.oup.com
We examine the time delay between radio and X-ray and between narrow radio frequency
flares in Sagittarius A*(Sgr A*), from analyses of the synchrotron, bremsstrahlung, and …

Evolution of MHD torus and mass outflow around spinning AGNs

R Aktar, KC Pan, T Okuda - Monthly Notices of the Royal …, 2024 - academic.oup.com
We perform axisymmetric, 2D magnetohydrodynamic simulations to investigate accretion
flows around spinning active galactic nuclei. To mimic the space–time geometry of spinning …

Radiation RMHD accretion flows around spinning AGNs: a comparative study of MAD and SANE state

R Aktar, KC Pan, T Okuda - arXiv preprint arXiv:2406.10496, 2024 - arxiv.org
In our study, we examine a 2D radiation, relativistic, magnetohydrodynamics (Rad-RMHD)
accretion flows around a spinning supermassive black hole. We begin by setting an initial …