FRONTIERS IN COMPUTATIONAL ASTROPHYSICS

Particle and Flames in Radiative and Magnetic Flows

October 11-15, 2010
Lyon, France

Contribution of Luc Dessart

Title

Non-LTE time-dependent radiative-transfer simulations of supernovae II-Plateau, II-peculiar, Ib, and Ic

Topics

"Explosive fate of stars"

Keywords

core-collapse supernova - radiative transfer

Abstract

I will present a new approach to the modeling of supernova (SN) spectra and light curves that takes into account line blanketing and departures from Local Thermodynamic Equilibrium, as well as treats time dependent terms in the radiative-transfer, energy, and statistical-equilibrium equations. Combined with hydrodynamical inputs of SN ejecta produced with piston-driven explosions of pre-SN red-supergiant, blue-supergiant, or Wolf-Rayet stars, we simulate the photometric and spectroscopic evolution from a given time after shock breakout until the nebular phase. I will describe the assets of this method, and in particular the possibility of constraining some properties of the explosion and the progenitor from the combined analysis of spectra and light curves. I will illustrate with results for SNe II-peculiar (specifically SN1987A), II-Plateau, Ib, and Ic.

Talk