Relativistic low angular momentum accretion in 3D

TL;DR

This paper investigates relativistic low angular momentum accretion onto black holes using 3D simulations, incorporating gas and black hole rotation and magnetic fields, comparing results with semi-analytical models.

Contribution

It introduces fully relativistic 3D simulations of magnetized accretion flows onto rotating black holes, including gas and black hole spin effects.

Findings

Flow structures differ from 1D semi-analytical models

Magnetic fields influence accretion dynamics

Rotation impacts the transonic flow properties

Abstract

We study the low angular momentum accretion of matter onto Schwarzschild or Kerr black hole using fully relativistic numerical simulations. Our aim is to include the rotation of both the gas and the black hole and the presence of the magnetic field into the picture. We compare resulting structure of transonic flow with results of 1D pseudo-Newtonian semi-analytical computations of non-magnetized flow.