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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
A relativistic type Ibc supernova without a detected γ-ray burst
Nature, Volume 463, No. 7280, Year 2010
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Description
Long duration γ-ray bursts (GRBs) mark the explosive death of some massive stars and are a rare sub-class of type Ibc supernovae. They are distinguished by the production of an energetic and collimated relativistic outflow powered by a central engine (an accreting black hole or neutron star). Observationally, this outflow is manifested in the pulse of γ-rays and a long-lived radio afterglow. Until now, central-engine-driven supernovae have been discovered exclusively through their γ-ray emission, yet it is expected that a larger population goes undetected because of limited satellite sensitivity or beaming of the collimated emission away from our line of sight. In this framework, the recovery of undetected GRBs may be possible through radio searches for type Ibc supernovae with relativistic outflows. Here we report the discovery of luminous radio emission from the seemingly ordinary type Ibc SN 2009bb, which requires a substantial relativistic outflow powered by a central engine. A comparison with our radio survey of type Ibc supernovae reveals that the fraction harbouring central engines is low, about one per cent, measured independently from, but consistent with, the inferred rate of nearby GRBs. Independently, a second mildly relativistic supernova has been reported. © 2010 Macmillan Publishers Limited. All rights reserved.
Authors & Co-Authors
Soderberg, Alicia M.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Chakraborti, Sayan
India, Mumbai
Tata Institute of Fundamental Research, Mumbai
Pignata, Giuliano
Chile, Santiago
Universidad de Chile
Chevalier, Roger A.
United States, Charlottesville
University of Virginia
Chandra, Poonam C.
Canada, Kingston
Royal Military College of Canada
Ray, A.
India, Mumbai
Tata Institute of Fundamental Research, Mumbai
Wieringa, Mark H.
Australia, Sydney
Australia Telescope National Facility
Copete, A.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Chaplin, Vandiver L.
United States, Huntsville
The University of Alabama in Huntsville
Connaughton, Valerie
United States, Huntsville
The University of Alabama in Huntsville
Barthelmy, Scott D.
United States, Greenbelt
Nasa Goddard Space Flight Center
Bietenholz, Michael F.
Canada, Toronto
York University
South Africa, Krugersdorp
Hartebeesthoek Radio Astronomy Observatory
Chugaǐ, N. N. N.
Russian Federation, Moscow
Institute of Astronomy of the Russian Academy of Sciences
Stritzinger, Maximilian D.
Chile, La Serena
Las Campanas Observatory
Denmark, Copenhagen
Niels Bohr Institutet
Hamuy, Mario A.
Chile, Santiago
Universidad de Chile
Fransson, Claes
Sweden, Stockholm
Stockholms Universitet
Fox, Ori D.
United States, Charlottesville
University of Virginia
Levesque, Emily M.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Honolulu
University Hawaii Institute for Astronomy
Grindlay, Jonathan E.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Challis, Peter M.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Foley, Ryan J.F.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Kirshner, Robert P.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Milne, Peter A.
United States, Tucson
The University of Arizona
Torres, Manuel A.P.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Statistics
Citations: 258
Authors: 24
Affiliations: 16
Identifiers
Doi:
10.1038/nature08714
ISSN:
00280836
e-ISSN:
14764687
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative