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Zoology and wildlife conservation

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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.

Author: Hjorth, Jens, Klose, Sylvio, Sollerman, Jesper, Watson, Darach, Jakobsson, Pall, Fynbo, Johan P.U., Gorosabel, Javier, Jensen, Brian L., Jorgensen, Uffe G., Dong Xu, Ramirez-Ruiz, Enrico, Thone, Christina C., Bloom, Joshua S., Davis, Tamara M., Graham, John F., Fruchter, Andrew S., Bersier, David, Kewley, Lisa, Cassan, Arnaud, Ceron, Jose Maria Castro, Foley, Suzanne, Hinse, Tobias C., Horne, Keith D., Kocevski, Daniel, Marquette, Jean-Baptiste, Perley, Daniel, Stritzinger, Maximilian D., Vreeswijk, Paul M., Wijers, Ralph A.M., Woller, Kristian G., Zub, Marta
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
United States, Observations, Supernovae, Supernovas, Gamma rays

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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.

Author: Hjorth, Jens, Kouveliotou, Chryssa, Sollerman, Jesper, Pedersen, Kristian, Watson, Darach, Jakobsson, Pall, Fynbo, Johan P.U., Gorosabel, Javier, Price, Paul A., Kubas, Daniel, Jensen, Brian L., Jorgensen, Uffe G.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
Research, Discovery and exploration, Galaxies, Gamma ray astronomy

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Subjects list: United States
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