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Imaging an Event Horizon: Mitigation of Source Variability of Sagittarius A*
Ru-Sen Lu, Freek Roelofs, Vincent L. Fish +6
The black hole in the center of the Galaxy, associated with the compact source Sagittarius A* (Sgr A*), is predicted to cast a shadow upon the emission of the surrounding plasma fl…
General relativistic magnetohydrodynamical simulations of the jet in M87
Monika Moscibrodzka, Heino Falcke, Hotaka Shiokawa
(abridged) The connection between black hole, accretion disk, and radio jet can be best constrained by fitting models to observations of nearby low luminosity galactic nuclei, in p…
Measuring the Direction and Angular Velocity of a Black Hole Accretion Disk via Lagged Interferometric Covariance
Michael D. Johnson, Abraham Loeb, Hotaka Shiokawa +2
We show that interferometry can be applied to study irregular, rapidly rotating structures, as are expected in the turbulent accretion flow near a black hole. Specifically, we anal…
"Circularization" vs. Accretion -- What Powers Tidal Disruption Events?
Tsvi Piran, Gilad Svirski, Julian Krolik +2
A tidal disruption event (TDE) takes place when a star passes near enough to a massive black hole to be disrupted. About half the star's matter is given elliptical trajectories wit…
General Relativistic Hydrodynamic Simulation of Accretion Flow from a Stellar Tidal Disruption
Hotaka Shiokawa, Julian H. Krolik, Roseanne M. Cheng +2
We study how the matter dispersed when a supermassive black hole tidally disrupts a star joins an accretion flow. Combining a relativistic hydrodynamic simulation of the stellar di…