Modeling Accretion Disks, Winds & Jets in Tidal Disruption Events

Abstract

The tidal disruption of a star by a supermassive black hole provides a unique opportunity for us to study accretion physics around black holes. In a few years' time since the onset of an event, the rate of the stellar debris supplied to the black hole gradually drops from several orders of magnitude above the Eddington accretion rate to below Eddington. This allows us to use tidal disruption events (TDEs) to study superEddington accretion disk physics as well as the transition between the super-Eddington accretion regime and the thin disk regime. In this talk, I will present our latest general-relativistic radiation magnetohydrodynamic simulations of superEddington 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 spectroscopic features from these simulated superEddington accretion disks.