What Really Makes an Accretion Disk MAD

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• Prof. Mitchell C. Begelman (University of Colorado, Boulder)
• Thursday 18 May 2023, 16:00-17:00
• Hoyle Lecture Theatre - Details will be sent by email.

If you have a question about this talk, please contact eb694.

The concept of a Magnetically Arrested Disk (MAD) is interesting because it provides a way to maximize the extraction of spin energy from the central black hole, potentially powering jets. But how and whether they can be formed in nature is controversial. I will discuss some basic physical ideas underpinning MADs and argue that they may be relatively easy to form and maintain, but not quite in the way proponents have suggested. In addition to being a key element in modeling results from the Event Horizon Telescope, MADs may be crucial for solving a number of longstanding puzzles in accretion disk theory.

This talk is part of the Institute of Astronomy Colloquia series.

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• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
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• Cosmology, Astrophysics and General Relativity
• Hoyle Lecture Theatre - Details will be sent by email
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