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Physics Colloquium

Thursday, May 4, 2023
4:00pm to 5:00pm
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Online and In-Person Event
Black Hole Accretion from the Inside Out
Jason Dexter, University of Colorado, Boulder and JILA,

It is now possible to image black holes with event horizon scale resolution, providing a new means of studying the physics of gas accretion and jet launching. I will show that the data can be used to study magnetic fields near the event horizon, which are thought to play a vital role in the accretion and jet launching processes, and argue that the magnetic fields near Sgr A* and M87 are dynamically important. I will further discuss numerical simulations of black hole accretion with radiative cooling, including their predictions for high energy flares and for the broadband spectra of higher luminosity systems.

Join via Zoom:

Meeting ID: 858 1199 4621

The colloquium is held in Feynman Lecture Hall, 201 E. Bridge.

In person is open to those with a valid Caltech ID.