Estimating the parameters of the Sgr A* black hole

TL;DR

This paper discusses how future measurements of relativistic effects near Sgr A* can precisely determine the black hole's parameters and also constrain surrounding mass distributions like star clusters and dark matter.

Contribution

It proposes a method to estimate the parameters of Sgr A* and the nearby mass distributions using relativistic effect measurements.

Findings

Relativistic measurements can tightly constrain black hole parameters.

Mass-density distributions of star clusters and dark matter can be inferred.

Potential for improved understanding of galactic center dynamics.

Abstract

The measurement of relativistic effects around the galactic center may allow in the near future to strongly constrain the parameters of the supermassive black hole likely present at the galactic center (Sgr A*). As a by-product of these measurements it would be possible to severely constrain, in addition, also the parameters of the mass-density distributions of both the innermost star cluster and the dark matter clump around the galactic center.