Astronomy: An asymmetric energetic type Ic supernova viewed off-axis, and a link to gamma ray bursts

Paolo A. Mazzali, Koji S. Kawabata, Keiichi Maeda, Ken'Ichi Nomoto, Alexei V. Filippenko, Enrico Ramirez-Ruiz, Stefano Benetti, Elena Pian, Jinsong Deng, Nozomu Tominaga, Youichi Ohyama, Masanori Iye, Ryan J. Foley, Thomas Matheson, Lifan Wang, Avishay Gal-Yam

Research output: Contribution to journalArticlepeer-review

Abstract

Type Ic supernovae, the explosions after the core collapse of massive stars that have previously lost their hydrogen and helium envelopes, are particularly interesting because of their link with long-duration gamma ray bursts. Although indications exist that these explosions are aspherical, direct evidence has been missing. Late-time observations of supernova SN 2003jd, a luminous type 1c supernova, provide such evidence. Recent Subaru and Keck spectra reveal double-peaked profiles in the nebular lines of neutral oxygen and magnesium. These profiles are different from those of known type Ic supernovae, with or without a gamma ray burst, and they can be understood if SN 2003jd was an aspherical axisymmetric explosion viewed from near the equatorial plane. If SN 2003jd was associated with a gamma ray burst, we missed the burst because it was pointing away from us.

Original languageEnglish (US)
Pages (from-to)1284-1287
Number of pages4
JournalScience
Volume308
Issue number5726
DOIs
StatePublished - May 27 2005

ASJC Scopus subject areas

  • General

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