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SN 1998bw at late phases
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2000 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 537, no 2, L127-L130 p.Article in journal (Refereed) Published
Abstract [en]

We present observations of the peculiar supernova SN 1998bw, which was probably associated with GRB 980435. 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 similar to 0.3-0.9 M. of ejected Ni-56 is required to power the supernova.

Place, publisher, year, edition, pages
2000. Vol. 537, no 2, L127-L130 p.
Keyword [en]
gamma rays : bursts, nuclear reactions, nucleosynthesis, abundances supernovae : individual (SN 1998bw), gamma-ray burst, 25 april 1998, late spectral evolution, unusual supernova, light curves, emission, grb-980425, sn-1987a, ni-56, mass
Identifiers
URN: urn:nbn:se:kth:diva-19931ISI: 000088451200014OAI: oai:DiVA.org:kth-19931DiVA: diva2:338623
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Ryde, Felix

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