The afterglow of GRB050709 and the nature of the short-hard gamma-ray bursts

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dc.creatorFox, D. B.
dc.creatorFrail, D. A.
dc.creatorPrice, P. A.
dc.creatorKulkarni, S. R.
dc.creatorBerger, E.
dc.creatorPiran, T.
dc.creatorSoderberg, A. M.
dc.creatorCenko, S. B.
dc.creatorCameron, P. B.
dc.creatorGal-Yam, A.
dc.creatorKasliwal, M. M.
dc.creatorMoon, D. -S.
dc.creatorHarrison, F. A.
dc.creatorNakar, E.
dc.creatorSchmidt, B. P.
dc.creatorPenprase, B.
dc.creatorChevalier, R. A.
dc.creatorKumar, P.
dc.creatorRoth, K.
dc.creatorWatson, D.
dc.creatorLee, B. L.
dc.creatorShectman, S.
dc.creatorPhillips, M. M.
dc.creatorRoth, M.
dc.creatorMcCarthy, P. J.
dc.creatorRauch, M.
dc.creatorCowie, L.
dc.creatorPeterson, B. A.
dc.creatorRich, J.
dc.creatorKawai, N.
dc.creatorAoki, K.
dc.creatorKosugi, G.
dc.creatorTotani, T.
dc.creatorPark, H. -S.
dc.creatorMacFadyen, A.
dc.creatorHurley, K. C.
dc.date2005-10-05
dc.date.accessioned2026-07-07T10:43:20Z
dc.date.available2026-07-07T10:43:20Z
dc.descriptionThe final chapter in the long-standing mystery of the gamma-ray bursts (GRBs) centres on the origin of the short-hard class, 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 whose accurate position allows us to unambiguously associate it 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.
dc.descriptionNature in press (Oct 6 issue). 23 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0510110
dc.identifierhttp://arxiv.org/abs/astro-ph/0510110
dc.identifierNature437:845-850,2005
dc.identifierdoi:10.1038/nature04189
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182206
dc.subjectAstrophysics
dc.titleThe afterglow of GRB050709 and the nature of the short-hard gamma-ray bursts
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