Publication Date:
2005-05-28
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mazzali, Paolo A -- Kawabata, Koji S -- Maeda, Keiichi -- Nomoto, Ken'ichi -- Filippenko, Alexei V -- Ramirez-Ruiz, Enrico -- Benetti, Stefano -- Pian, Elena -- Deng, Jinsong -- Tominaga, Nozomu -- Ohyama, Youichi -- Iye, Masanori -- Foley, Ryan J -- Matheson, Thomas -- Wang, Lifan -- Gal-Yam, Avishay -- New York, N.Y. -- Science. 2005 May 27;308(5726):1284-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Astronomy, School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan. mazzali@ts.astro.it〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15919986" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
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Medicine
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Natural Sciences in General
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Physics
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