Measuring the Black Hole and Accretion Parameters of Sagittarius A* from EHT Observations using a Semi-Analytic Model

Braden J. Marazzo-Nowicki, Paul Tiede, Dominic O. Chang +2

The Event Horizon Telescope (EHT) Collaboration produced the first image of the apparent shadow of the central black hole of Sagittarius\,A${}^{\ast }$ (\sgra). \sgra source structure vari…