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An Asymmetric Energetic Type Ic Supernova Viewed Off-Axis, and a Link to Gamma Ray Bursts

Mazzali, Paolo A. and Kawabata, Koji S. and Maeda, Keiichi and Nomoto, Ken'ichi and Filippenko, Alexei V. and Ramirez-Ruiz, Enrico and Benetti, Stefano and Pian, Elena and Deng, Jinsong and Tominaga, Nozomu and Ohyama, Youichi and Iye, Masanori and Foley, Ryan J. and Matheson, Thomas and Wang, Lifan and Gal-Yam, Avishay (2005) An Asymmetric Energetic Type Ic Supernova Viewed Off-Axis, and a Link to Gamma Ray Bursts. Science, 308 (5726). pp. 1284-1287. ISSN 0036-8075. doi:10.1126/science.1111384.

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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 Ic 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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Mazzali, Paolo A.0000-0001-6876-8284
Maeda, Keiichi0000-0003-2611-7269
Nomoto, Ken'ichi0000-0001-9553-0685
Filippenko, Alexei V.0000-0003-3460-0103
Ramirez-Ruiz, Enrico0000-0003-2558-3102
Benetti, Stefano0000-0002-3256-0016
Ohyama, Youichi0000-0001-9490-3582
Matheson, Thomas0000-0001-6685-0479
Gal-Yam, Avishay0000-0002-3653-5598
Additional Information:© 2005 American Association for the Advancement of Science. Received 22 February 2005; accepted 18 April 2005. This work is based on data collected at the Subaru telescope, operated by the NAOJ, and at the Keck telescopes made possible by the W. M. Keck Foundation. This research is supported in part by the Japan Society for the Promotion of Science and the Ministry of Education, Culture, Sports, Science, and Technology in Japan and by NSF in the USA. E.R.-R. is a Chandra Fellow and A.G.-Y. is a Hubble Fellow.
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
Ministry of Education, Culture, Sports, Science and Technology (MEXT)UNSPECIFIED
NASA Chandra FellowshipUNSPECIFIED
Issue or Number:5726
Record Number:CaltechAUTHORS:20141118-133639717
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51913
Deposited By: Tony Diaz
Deposited On:18 Nov 2014 21:49
Last Modified:10 Nov 2021 19:17

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