APS Colloquium - 9/16/2024 - Jason Dexter - Black hole accretion from the inside out

Edit: Unfortunately we had a problem with the microphone for this talk, so there is no audio. Our apologies!
Speaker:
Jason Dexter, JILA / CU Boulder
jila.colorado....
Title:
Black hole accretion from the inside out
Abstract:
In the last several years, the combination of resolved event horizon scale images and large-scale computational models has led to new insights into black hole accretion. The main implication is that magnetic fields near the event horizon can become dynamically important, and I'll show that such a scenario provides a natural explanation for the high energy flares from our Galactic center black hole. I’ll then discuss our efforts to extend beyond the two objects with resolved images and calculate theoretical predictions for more luminous systems, focusing on the maximum luminosity of a hot accretion flow and the physical origin of the X-ray corona.