SN 1998bw at late phases
Astrophysics
2009-10-31 v1
Abstract
We present observations of the peculiar supernova SN 1998bw, which was probably associated with GRB 980425. The photometric and spectroscopic evolution is monitored up to 500 days past explosion. We also present modeling based on spherically symmetric, massive progenitor models and very energetic explosions. The models allow line identification and clearly show the importance of mixing. From the late light curves we estimate that about 0.3-0.9 solar masses of ejected Nickel-56 is required to power the supernova.
Keywords
Cite
@article{arxiv.astro-ph/0006406,
title = {SN 1998bw at late phases},
author = {Jesper Sollerman and Cecilia Kozma and Claes Fransson and Bruno Leibundgut and Peter Lundqvist and Felix Ryde and Patrick Woudt},
journal= {arXiv preprint arXiv:astro-ph/0006406},
year = {2009}
}
Comments
With 3 figures Accepted for ApJ Letters