An enigmatic long-lasting γ-ray burst not accompanied by a bright supernova

M. Della Valle (), G. Chincarini, N. Panagia, G. Tagliaferri, D. Malesani, V. Testa, D. Fugazza, S. Campana, S. Covino, V. Mangano, L. A. Antonelli, P. D’Avanzo, K. Hurley, I. F. Mirabel, L. J. Pellizza, S. Piranomonte and L. Stella
Additional contact information
M. Della Valle: INAF, Osservatorio Astrofisico di Arcetri
G. Chincarini: Dipartimento di Fisica, Università degli Studi di Milano-Bicocca
N. Panagia: Space Telescope Science Institute
G. Tagliaferri: INAF, Osservatorio Astronomico di Brera
D. Malesani: International School for Advanced Studies (SISSA/ISAS)
V. Testa: INAF, Osservatorio Astronomico di Roma
D. Fugazza: Dipartimento di Fisica, Università degli Studi di Milano-Bicocca
S. Campana: INAF, Osservatorio Astronomico di Brera
S. Covino: INAF, Osservatorio Astronomico di Brera
V. Mangano: INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo
L. A. Antonelli: INAF, Osservatorio Astronomico di Roma
P. D’Avanzo: INAF, Osservatorio Astronomico di Brera
K. Hurley: University of California, Berkeley, Space Sciences Laboratory
I. F. Mirabel: European Southern Observatory
L. J. Pellizza: Instituto de Astronomía y Física del Espacio (CONICET/UBA)
S. Piranomonte: INAF, Osservatorio Astronomico di Roma
L. Stella: INAF, Osservatorio Astronomico di Roma

Nature, 2006, vol. 444, issue 7122, 1050-1052

Abstract: The long and the short of it The tidy classification system that divided γ-ray bursts (GRBs) into long-duration busts (lasting more than two seconds) and short may have had its day. The final nail in its coffin may be GRB 060614. Discovered on 14 June 2006 by the Burst Alert Telescope on-board the Swift satellite, this burst was long, at 102 seconds, but as reported in a clutch of papers in this issue, it has a number of properties, including the absence of an accompanying supernova, that were previously considered diagnostic of a 'short' GRB. The hunt is now on for a classification system to take account of the diversity now apparent in GRBs. In the accompanying News & Views, Bing Zhang suggests that the answer may be to adopt a Type I/Type II classification similar to that used for supernovae.

Date: 2006
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DOI: 10.1038/nature05374

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