Magnetized Thick Disks around Boson Stars

TL;DR

This paper investigates how magnetic fields impact the structure and properties of thick accretion disks around rotating boson stars, revealing that strong magnetic fields can significantly alter disk characteristics.

Contribution

It extends purely hydrodynamical thick disk models to include magnetic fields, specifically analyzing toroidal magnetic fields around boson stars.

Findings

Magnetic fields influence the structure of thick disks around boson stars.

Strong magnetic fields can modify the unique features of retrograde tori.

Magnetization affects the disk's physical properties and potential observational signatures.

Abstract

The effects of magnetic fields on accretion disks around compact objects are of high importance in the study of their general properties and dynamics. Here we analyze the influence of magnetic fields on thick accretion disks around rotating boson stars. We assume a uniform constant specific angular momentum distribution and a polytropic equation of state. The purely hydrodynamical thick disk solutions are extended to magnetized solutions by adding a toroidal magnetic field and then analyzed in terms of a magnetization parameter. We consider one-centered solutions as well as two-centered solutions and focus on retrograde tori, since they are more distinctive due to their unique properties. Our computed solutions indicate that strong magnetic fields influence the characteristics of thick disks around rotating boson stars and possibly affect their unique features.