# No supernovae associated with two long-duration γ-ray bursts

@article{Fynbo2006NoSA,
title={No supernovae associated with two long-duration $\gamma$-ray bursts},
author={Johan P. U. Fynbo and Darach Watson and Christina C. Th{\"o}ne and Jesper Sollerman and Joshua S. Bloom and Tamara M. Davis and Jens Hjorth and P. Jakobsson and U. G. J{\o}rgensen and John F. Graham and Andrew S. Fruchter and David Bersier and Lisa J. Kewley and Arnaud Cassan and Jose Maria Castro Ceron and Suzanne Foley and Javier Gorosabel and Tobias C. Hinse and Keith D. Horne and Brian L. Jensen and S. Klose and Daniel Kocevski and Jean Baptiste Marquette and Daniel A. Perley and Enrico Ramirez-Ruiz and Maximilian D. Stritzinger and Paul M. Vreeswijk and Ralph Wijers and Kristian Woller and Dong Xu and Marta Zub},
journal={Nature},
year={2006},
volume={444},
pages={1047-1049}
}
• Published 15 August 2006
• Physics
• Nature
It is now accepted that long-duration γ-ray bursts (GRBs) are produced during the collapse of a massive star1,2. The standard ‘collapsar’ model3 predicts that a broad-lined and luminous type Ic core-collapse supernova accompanies every long-duration GRB4. This association has been confirmed in observations of several nearby GRBs5–9. Here we report that GRB 060505 (ref. 10) and GRB 060614 (ref. 11) were not accompanied by supernova emission down to limits hundreds of times fainter than the…
321 Citations

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