Constraints on mass, spin and magnetic field of microquasar H~1743-322 from observations of QPOs

TL;DR

This paper uses QPO observations in the microquasar H~1743-322 to estimate the black hole's mass, spin, and magnetic field, enhancing understanding of strong gravity effects in accretion disks.

Contribution

It introduces a model linking QPOs to charged particle oscillations in magnetic fields, providing new estimates for the black hole's parameters.

Findings

Estimated mass and spin of H~1743-322's black hole.

Constraints on the magnetic field strength.

Influence of magnetic fields on particle motion around black holes.

Abstract

The study of quasi-periodic oscillations (QPOs) of X-ray flux observed in many microquasars can provide a powerful tool for testing of the phenomena occurring in strong gravity regime. QPOs phenomena can be well related to the oscillations of charged particles in accretion disks orbiting Kerr black holes immersed in external large-scale magnetic fields. In the present paper we study the model of magnetic relativistic precession and provide estimations of the mass and spin of the central object of the microquasar H~1743-322 which is a candidate for a black hole. Moreover, we discuss the possible values of external magnetic field and study its influence on the motion of charged particles around rotating black hole.