Spectroscopic modeling of nebular-phase supernovae
by
Anders Jerkstrand
→
Europe/Stockholm
FA31
FA31
Description
Most of the heavy elements in the universe are created
by massive stars and ejected in supernovae. A few months
after explosion, the inner layers of the supernova become
visible, and we can analyse the nucleosynthetic yields and
the properties of the explosion.
Interpretation of the spectra requires the computation
of non-thermal processes caused by radioactive decays,
statistical and thermal equilibrium in a large number of zones
of distinct chemical composition, and radiative transport
simulations of the multi-line transfer occuring in the homologous flow.
I discuss the development of such computational tools and their
application to the 8-20 year spectra of SN 1987A,
as well as to the 1-2 year spectra of other Type II SNe.