Effect of an external mass distribution on the magnetized accretion disk

TL;DR

This paper develops an analytical model of a magnetized thick accretion disk around a static black hole influenced by an external matter distribution with quadrupole moments, exploring its properties and equilibrium sequences.

Contribution

It introduces a new analytical model of a magnetized thick disk in a spacetime with quadrupole moments, combining previous approaches to study disk properties in this context.

Findings

Properties of relativistic accretion disks in quadrupole-perturbed spacetime analyzed.

Different angular momentum distributions examined for disk equilibrium.

Model provides insights into the effects of external matter on accretion disk structure.

Abstract

In this paper, we constructed the magnetized thick disk model analytically around the static black hole in the presence of an external distribution of matter up to the quadrupole moment. This space-time is a solution to Einstein's field equation describing the exterior of a static and axially symmetric object locally. This work aims to study this space-time and the effects of quadrupole moments via studying the properties of the equilibrium sequences of magnetized, non-self-gravitating disks in this space-time. We discussed a procedure to build the thick disk model based on a combination of two approaches previously considered in the literature. We have examined different angular momentum distributions, and We have shown the properties of this relativistic accretion disc model in this background.