No supernovae associated with two long-duration gamma-ray bursts
Article Abstract:
The standard collapsar model predicts that a broad-lined and luminous type Ic core-collapse supernova accompanies every duration gamma-ray bursts (GRBs), and this association is confirmed in the observations of several nearby GRBs. It is reported that the gamma rays burst GRB060505 and GRB 060614 were however not accompanied by supernova emission down to limits hundreds of times fainter than the archetypal supernova SN 1998bw that accompanied GRB 980425, and fainter than any type 1c supernova ever observed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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The optical afterglow of the short gamma-ray burst GRB 050709
Article Abstract:
The first discovery of transient optical emission associated with a short burst, gamma-ray bursts (GRB) 050709 are reported. The optical afterglow is localized with subarcsecond accuracy, and lies in the outskirts of a blue dwarf galaxy.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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