Late Emission from Type IA Supernovae

Details Late Emission from Type IA Supernovae Late Emission from Type IA Supernovae

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...181.7602h&link_type=abstract

American Astronomical Society, 181st AAS Meeting, #76.02; Bulletin of the American Astronomical Society, Vol. 24, p.1243

Astronomy and Astrophysics

Astronomy

Scientific paper

We have investigated late time (t {>kern -1.0emlower0 .9exhbox {\sim}} 100() d) spectrum formation in type Ia supernovae. Radioactive decay of (56) Co powers the emission through non-thermal heating, excitation and ionization of the expanding nebula. The rate at which the decay energy drives each of these processes has been computed by solving the Boltzman equation. Line transfer is handled in the Sobolev approximation and explicitly includes non-local radiative coupling. Excitation, ionization and thermal equilibrium are solved self consistently, including photoionization and accounting for radial structure in the nebula. We compare the synthetic spectra produced by various explosion models with recently published late time spectra of type Ia supernovae.

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