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Pair Drizzle around Sub-Eddington Supermassive Black Holes
George N. Wong, Benjamin R. Ryan, Charles F. Gammie
Electron-positron pair creation near sub-Eddington accretion rate black holes is believed to be dominated by the Breit-Wheeler process (photon-photon collisions). The interacting h…
An Extension of the Athena++ Framework for Fully Conservative Self-Gravitating Hydrodynamics
P. D. Mullen, Tomoyuki Hanawa, C. F. Gammie
Numerical simulations of self-gravitating flows evolve a momentum equation and an energy equation that account for accelerations and gravitational energy releases due to a time-dep…
Disks as Inhomogeneous, Anisotropic Gaussian Random Fields
Daeyoung Lee, Charles F. Gammie
We model astrophysical disk surface brightness fluctuations as an inhomogeneous, anisotropic, time-dependent Gaussian random field. The field locally obeys the stochastic partial d…
A Magnetized, Moon-Forming Giant Impact
P. D. Mullen, C. F. Gammie
The Moon is believed to have formed in the aftermath of a giant impact between a planetary mass body and the proto-Earth. In a typical giant impact scenario, a disk of vapor, liqui…
Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole
Dimitrios Psaltis, Lia Medeiros, Pierre Christian +185
The 2017 Event Horizon Telescope (EHT) observations of the central source in M87 have led to the first measurement of the size of a black-hole shadow. This observation offers a new…
Monitoring the Morphology of M87* in 2009-2017 with the Event Horizon Telescope
Maciek Wielgus, Kazunori Akiyama, Lindy Blackburn +26
The Event Horizon Telescope (EHT) has recently delivered the first resolved images of M87*, the supermassive black hole in the center of the M87 galaxy. These images were produced…