TY - JOUR
T1 - Astronomy
T2 - An asymmetric energetic type Ic supernova viewed off-axis, and a link to gamma ray bursts
AU - Mazzali, Paolo A.
AU - Kawabata, Koji S.
AU - Maeda, Keiichi
AU - Nomoto, Ken'Ichi
AU - Filippenko, Alexei V.
AU - Ramirez-Ruiz, Enrico
AU - Benetti, Stefano
AU - Pian, Elena
AU - Deng, Jinsong
AU - Tominaga, Nozomu
AU - Ohyama, Youichi
AU - Iye, Masanori
AU - Foley, Ryan J.
AU - Matheson, Thomas
AU - Wang, Lifan
AU - Gal-Yam, Avishay
PY - 2005/5/27
Y1 - 2005/5/27
N2 - 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.
AB - 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.
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U2 - 10.1126/science.1111384
DO - 10.1126/science.1111384
M3 - Article
C2 - 15919986
AN - SCOPUS:21144480642
SN - 0036-8075
VL - 308
SP - 1284
EP - 1287
JO - Science
JF - Science
IS - 5726
ER -