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The afterglow of GRB 050709 and the nature of the short-hard γ-ray bursts

Fox, D. B. and Kulkarni, S. R. and Piran, T. and Soderberg, A. M. and Cenko, S. B. and Cameron, P. B. and Gal-Yam, A. and Kasliwal, M. M. and Moon, D.-S. and Harrison, F. A. and Nakar, E. (2005) The afterglow of GRB 050709 and the nature of the short-hard γ-ray bursts. Nature, 437 (7060). pp. 845-850. ISSN 0028-0836.

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The final chapter in the long-standing mystery of the γ-ray bursts (GRBs) centres on the origin of the short-hard class of bursts, which are suspected on theoretical grounds to result from the coalescence of neutron-star or black-hole binary systems. Numerous searches for the afterglows of short-hard bursts have been made, galvanized by the revolution in our understanding of long-duration GRBs that followed the discovery in 1997 of their broadband (X-ray, optical and radio) afterglow emission. Here we present the discovery of the X-ray afterglow of a short-hard burst, GRB 050709, whose accurate position allows us to associate it unambiguously with a star-forming galaxy at redshift z = 0.160, and whose optical lightcurve definitively excludes a supernova association. Together with results from three other recent short-hard bursts, this suggests that short-hard bursts release much less energy than the long-duration GRBs. Models requiring young stellar populations, such as magnetars and collapsars, are ruled out, while coalescing degenerate binaries remain the most promising progenitor candidates.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access
Fox, D. B.0000-0002-3714-672X
Kulkarni, S. R.0000-0001-5390-8563
Piran, T.0000-0002-7964-5420
Cenko, S. B.0000-0003-1673-970X
Gal-Yam, A.0000-0002-3653-5598
Kasliwal, M. M.0000-0002-5619-4938
Moon, D.-S.0000-0003-4200-5064
Harrison, F. A.0000-0003-2992-8024
Nakar, E.0000-0002-4534-7089
Additional Information:© 2005 Nature Publishing Group. Received 11 August 2005; Accepted 30 August 2005. Our GRB research is supported in part by funds from NSF, NASA, the Australian Research Council, and the Ministry of Education, Science, Culture, Sports, and Technology in Japan. The VLA is operated by the National Radio Astronomy Observatory, a facility of the NSF operated under cooperative agreement by Associated Universities, Inc. The Gemini Observatory is operated by the Association of Universities for Research in Astronomy (AURA), Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership. This work is based in part on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.
Funding AgencyGrant Number
Australian Research CouncilUNSPECIFIED
Ministry of Education, Culture, Sports, Science and Technology (MEXT)UNSPECIFIED
Issue or Number:7060
Record Number:CaltechAUTHORS:20150403-095228578
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Official Citation:The afterglow of GRB 050709 and the nature of the short-hard bold y-ray bursts p845 D. B. Fox, D. A. Frail, P. A. Price, S. R. Kulkarni, E. Berger, T. Piran, A. M. Soderberg, S. B. Cenko, P. B. Cameron, A. Gal-Yam, M. M. Kasliwal, D.-S. Moon, F. A. Harrison, E. Nakar, B. P. Schmidt, B. Penprase, R. A. Chevalier, P. Kumar, K. Roth, D. Watson, B. L. Lee, S. Shectman, M. M. Phillips, M. Roth, P. J. McCarthy, M. Rauch, L. Cowie, B. A. Peterson, J. Rich, N. Kawai, K. Aoki, G. Kosugi, T. Totani, H.-S. Park, A. MacFadyen and K. C. Hurley doi: 10.1038/nature04189
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56339
Deposited By: Ruth Sustaita
Deposited On:03 Apr 2015 19:09
Last Modified:19 Nov 2019 00:51

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