An enigmatic long-lasting γ-ray burst not accompanied by a bright supernova.
In: Nature, Jg. 444 (2006-12-21), Heft 7122, S. 1050-1052
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Zugriff:
Gamma-ray bursts (GRBs) are short, intense flashes of soft γ-rays coming from the distant Universe. Long-duration GRBs (those lasting more than ∼2 s) are believed to originate from the deaths of massive stars, mainly on the basis of a handful of solid associations between GRBs and supernovae. GRB 060614, one of the closest GRBs discovered, consisted of a 5-s hard spike followed by softer, brighter emission that lasted for ∼100 s (refs 8, 9). Here we report deep optical observations of GRB 060614 showing no emerging supernova with absolute visual magnitude brighter than MV = -13.7. Any supernova associated with GRB 060614 was therefore at least 100 times fainter, at optical wavelengths, than the other supernovae associated with GRBs. This demonstrates that some long-lasting GRBs can either be associated with a very faint supernova or produced by different phenomena. [ABSTRACT FROM AUTHOR]
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An enigmatic long-lasting γ-ray burst not accompanied by a bright supernova.
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Autor/in / Beteiligte Person: | Valle, M. Della ; Chincarini, G. ; Panagia, N. ; Tagliaferri, G. ; Malesani, D. ; Testa, V. ; Fugazza, D. ; Campana, S. ; Covino, S. ; Mangano, V. ; Antonelli, L. A. ; D’Avanzo, P. ; Hurley, K. ; Mirabel, I. F. ; Pellizza, L. J. ; Piranomonte, S. ; Stella, L. |
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Zeitschrift: | Nature, Jg. 444 (2006-12-21), Heft 7122, S. 1050-1052 |
Veröffentlichung: | 2006 |
Medientyp: | academicJournal |
ISSN: | 0028-0836 (print) |
DOI: | 10.1038/nature05374 |
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