Black holes of intermediate masses in globular clusters: constraints on a spin of a black hole

TL;DR

This paper estimates the spin of intermediate-mass black holes in globular clusters by analyzing jet power, radio luminosity, magnetic fields, and accretion rates using established astrophysical mechanisms.

Contribution

It introduces a method to determine black hole spins in globular clusters based on jet power and magnetic coupling, applying known physical relations.

Findings

Estimated black hole spins in globular clusters.

Derived magnetic field strengths near black holes.

Quantified accretion rates using Bondi-Hoyle mechanism.

Abstract

In this paper we determined values of a spin of central black holes of the intermediate masses in globular clusters. For determination of value of a spin we used the known relation between the kinetic power of the relativistic jet and observable radio-luminosity of the region near to a central black hole, and our estimates have based on the known Blandford-Znajek mechanism. The value of a magnetic field strength near the event horizon of a black hole was derived via magnetic coupling mechanism. Accretion rate was derived using Bondi-Hoyle mechanism.