Spectrum for the electric dipole which nonradially falling into a black hole

TL;DR

This paper derives the electromagnetic bremsstrahlung spectrum for a dipole spiraling into a Schwarzschild black hole, proposing a new method for accurately measuring black hole mass and characteristics of its magnetosphere or accretion disk.

Contribution

It introduces a novel spectrum analysis for a dipole falling into a black hole, enabling more precise black hole mass determination and insights into its environment.

Findings

Spectrum features can determine black hole mass with higher accuracy.

High-frequency spectrum asymptotics are impact parameter independent.

Spectrum analysis can reveal properties of the black hole magnetosphere.

Abstract

The electromagnetic bremsstrahlung spectrum for the dipole which falling by a spiral orbit into the Schwarzschild black hole was found. The characteristic features in this electromagnetic spectrum can be used for determine of the black hole mass by the new way. This new way (if implemented) provides higher accuracy in determining of the black hole mass. Also these features in the spectrum can be used for determine of the certain characteristics in the black hole magnetosphere or in the accretion disk characteristics around the black hole. It is also shown that the asymptotic behavior of this spectrum (at high frequencies) is practically independent from the impact parameter of the falling dipole.