Accretion Disks, Winds And Jets in Tidal Disruption Events

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• Jane Lixin Dai (University of Hong Kong)
• Thursday 21 November 2019, 16:00-17:00
• Sackler Lecture Theatre, IoA (tea at 3:30 pm).

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

The tidal disruption of a star by a supermassive black hole provides a unique opportunity for us to study accretion physics around black holes. During a tidal disruption event (TDE), the rate of stellar debris supplied to the black hole can vary from two orders above the Eddington accretion rate to sub-Eddington within a year. This allows us to use TDEs to study super-Eddington accretion disk physics, as well as to probe the transition between the super-Eddington thick disk regime and the thin disk regime. In this talk, I will present our latest general-relativistic radiation magnetohydrodynamic simulations of super-Eddington accretion disks, and show how we can use these results to understand the evolution of disks, winds, jets and emissions in TDEs. I will also talk about our theoretical modeling of X-ray reflection from these simulated super-Eddington accretion disks.

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

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Colloquia
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Priscilla
• Sackler Lecture Theatre, IoA (tea at 3:30 pm)

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