activity
20152026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations · 17k across the 81 of their papers we have counts for

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Showing 2015Show all

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astro-ph.HE2015★ 219 cited

Resolved Magnetic-Field Structure and Variability Near the Event Horizon of Sagittarius A*

Michael D. Johnson, Vincent L. Fish, Sheperd S. Doeleman +45

Near a black hole, differential rotation of a magnetized accretion disk is thought to produce an instability that amplifies weak magnetic fields, driving accretion and outflow. The…

astro-ph.IM2015★ 8 cited

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…