6–10 Jun 2022
Europe/Copenhagen timezone

The origin of TDE emission

9 Jun 2022, 14:10
20m
Talk TIdal Disruption Events TIdal Disruption Events

Speaker

Elad Steinberg (Hebrew University of Jerusalem)

Description

We present, for the first time, a fully self-consistent radiation hydrodynamic simulation of a realistic tidal disruption event (TDE). TDEs are highly luminous, multiwavelength astrophysical transients that carry great promise for measuring the properties of supermassive black holes, but the complex physics and large dynamic range of the problem has until now prevented self-consistent simulations with realistic parameters. Using the moving mesh code RICH, we evolve a solar mass star from its (destructive) first passage through the tidal radius of a 10^6 solar mass SMBH, up through the first fallback of debris, and beyond.
We show that the shock heating of the gas as it passes through pericenter is the main luminosity source of the observed early time emission. No efficient circularization is observed, ruling out certain classes of TDE models for "typical" TDE parameters.

Primary authors

Elad Steinberg (Hebrew University of Jerusalem) Dr Nicholas Stone (Hebrew University of Jerusalem)

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