Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-11-19
Mon.Not.Roy.Astron.Soc. 340 (2003) 191
Astronomy and Astrophysics
Astrophysics
accepted for publication in MNRAS
Scientific paper
10.1046/j.1365-8711.2003.06282.x
Detailed optical and near-IR observations of SN 1999E have confirmed early suggestions that this supernova was indeed a twin of the peculiar type II SN 1997cy: it was exceptionally luminous and had evolved slowly, and the line profiles had narrow peaks and broad wings, indicating interaction with the circumstellar material. Nevertheless, the most intriguing characteristic was that, in analogy to SN 1997cy, it exploded at a position consistent in time and location with a BATSE event (GRB980910). The "a posteriori" probability that the only two SNe with such an optical appearance are associated with two different BATSE GRB is only 0.2%. This raises the possibility that some GRB are associated with H--rich SNe.
Aretxaga Itziar
Benetti Stefano
Cappellaro Enrico
Chavushyan Vahram
Danziger Ivan John
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