Speaker
Sebastian Haid
(Universität zu Köln)
Description
Supernovae inject a large amount of energy and momentum into the interstellar medium. This is important to set phase structures, regulate star formation or drive outflows. An immediate result of this interaction is turbulence, also in the surroundings of supernovae. The density profile of the ambient medium crucially influences the evolution of the remnant.
We provide a semi-analytic framework, extending published, to simulate and understand the evolution of a supernova blast wave. It is able to recover the 3- dimensional momentum input of a single SN in structured media and the velocity distribution of the shock-accelerated material.
We perform single supernova explosions into ambient media with simple radial profiles and extend the scheme to turbulent three dimensional structures. We confirm the trend of recent numerical simulations of increasing momentum in less dense surroundings but with negligible numerical costs. Moreover we show an additional increase by isothermal turbulent motion.
Author
Sebastian Haid
(Universität zu Köln)