Magnetised tori in the background of a deformed compact object

University of Bremen, Centre of Applied Space Technology and Microgravity (ZARM), 28359 Bremen, Germany
e-mail: shokoufe.faraji@zarm.uni-bremen.de; audrey.trova@zarm.uni-bremen.de

Received: 21 November 2020
Accepted: 23 July 2021

Abstract

The aim of this work is to study the relativistic accretion thick disc model raised by a deformed compact object that slightly deviated from spherical up to the quadrupole moment by utilising the q-metric. This metric is the simplest asymptotically flat solution of Einstein’s equation with quadrupole moment. We studied the effects of quadrupole moments in combination with the parameters of the thick magnetised disc model via studying the properties of these equilibrium sequences of magnetised, non-self-gravitating discs in this space-time. We employed different angular momentum distributions and discussed the procedure of building this toroidal disc model based on a combination of approaches previously considered in the literature. We show the properties of this relativistic accretion disc model and its dependence on the initial parameters. In addition, this theoretical model can serve as the initial data for numerical simulations.