APO3 - The Origins of Massive Black Holes and Quasars at High Redshifts |
Speaker_ |
Noble, Scott |
Co-autors |
Charles F. Gammie, Po Kin Leung |
Talk _ |
Simulating VLBI Images of Sgr A* |
Abstract _ |
Very Long Baseline Interferometry (VLBI) at sub-mm/mm wavelengths shows promise at resolving the shadow cast by the supermassive black hole at the Galactic Center, Sgr A*, in the near future. In order to accurately test theoretical models of Sgr A* using these observations, a direct comparison of VLBI data to numerical models must be made. We will present our progress at modeling sub-mm/mm images of Sgr A* using accretion disk simulation data from our fixed background GRMHD code called HARM. Synchrotron and bremsstrahlung emission models are considered in the optically thin limit, which allows us to solve the radiative transfer equations using only simulation and geodesic data in a post-processing step. We will show predictions of sub-mm/mm observations by constraining our simulation camera to the expected angular resolution limit, and compare our variability timescales to those already measured. |