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A novel explosive process is required for the big gamma-ray burst GRB 060614

Gal-Yam, A. and Ofek, E. O. and Soderberg, A. M. and Kulkarni, S. R. and Cenko, S. B. and Sari, R. and Moon, D.-S. and Harrison, F. A. (2006) A novel explosive process is required for the big gamma-ray burst GRB 060614. Nature, 444 (7122). pp. 1053-1055. ISSN 0028-0836.

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Over the past decade, our physical understanding of gamma-ray bursts (GRBs) has progressed rapidly, thanks to the discovery and observation of their long-lived afterglow emission. Long-duration (≳2 s) GRBs are associated with the explosive deaths of massive stars ('collapsars', ref. 1), which produce accompanying supernovae; the short-duration (≲2 s) GRBs have a different origin, which has been argued to be the merger of two compact objects. Here we report optical observations of GRB 060614 (duration ~100 s, ref. 10) that rule out the presence of an associated supernova. This would seem to require a new explosive process: either a massive collapsar that powers a GRB without any associated supernova, or a new type of 'engine', as long-lived as the collapsar but without a massive star. We also show that the properties of the host galaxy (redshift z = 0.125) distinguish it from other long-duration GRB hosts and suggest that an entirely new type of GRB progenitor may be required.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access Information
Gal-Yam, A.0000-0002-3653-5598
Ofek, E. O.0000-0002-6786-8774
Kulkarni, S. R.0000-0001-5390-8563
Cenko, S. B.0000-0003-1673-970X
Sari, R.0000-0002-1084-3656
Moon, D.-S.0000-0003-4200-5064
Harrison, F. A.0000-0003-2992-8024
Additional Information:© 2006 Nature Publishing Group. Received 11 August; accepted 20 October. A.G. and E.B. acknowledge support by NASA through Hubble Fellowships. S.R.K. is supported by NSF and NASA. The HST campaign combined resources from our approved programmes (principal investigators S.R.K. and D.B.F.).
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Issue or Number:7122
Record Number:CaltechAUTHORS:20150331-143616612
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56255
Deposited By: Jason Perez
Deposited On:31 Mar 2015 23:21
Last Modified:19 Nov 2019 00:46

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