Events on Friday, February 13th, 2026
- Physics Department Colloquium
- The Black Hole Diet: How Accretion Controls Spin, Growth, and Feedback
- Time: 3:30 pm - 4:30 pm
- Place: Chamberlin 2241
- Speaker: Alexander Tchekhovskoy, Northwestern University
- Abstract: A black hole’s accretion rate controls its destiny, governing its spin, growth, luminosity, and feedback. However, connecting these crucial quantities to the scales that we can actually observe remains a major theoretical hurdle. In this talk, I will present recent simulations of magnetized gas feeding rapidly rotating black holes. These models offer new insights into the mechanics of gas consumption and ejection. I will demonstrate how these findings apply to a vast range of systems, linking the physics of supermassive black holes at the centers of galaxies to stellar-mass black holes born in dying stars.
- Host: Vladimir Zhdankin