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24 April 2024

» arxiv » astro-ph/0510190

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Discovery of the short gamma-ray burst GRB 050709
J. S. Villasenor ; D. Q. Lamb ; G. R. Ricker ; J.-L. Atteia ; N. Kawai ; N. Butler ; Y. Nakagawa ; J. G. Jernigan ; M. Boer ; G. B. Crew ; T. Q. Donaghy ; J. Doty ; E. E. Fenimore ; M. Galassi ; C. Graziani ; K. Hurley ; A. Levine ; F. Martel ; M. Matsuoka ; J.-F. Olive ; G. Prigozhin ; T. Sakamoto ; Y. Shirasaki ; M. Suzuki ; T. Tamagawa ; R. Vanderspek ; S. E. Woosley ; A. Yoshida ; J. Braga ; R. Manchanda ; G. Pizzichini ; K. Takagishi ; M. Yamauchi ;
Date:	6 Oct 2005
Subject:	astro-ph
Abstract:	Gamma-Ray Bursts (GRBs) fall into two classes: short-hard and long-soft bursts. The latter are now known to have X-ray and optical afterglows, to occur at cosmological distances in star-forming galaxies, and to be associated with the explosion of massive stars. In contrast, the distance scale, the energy scale, and the progenitors of short bursts have remained a mystery. Here we report the discovery of a short-hard burst whose accurate localization has led to follow-up observations that have identified the X-ray afterglow and (for the first time) the optical afterglow of a short-hard burst. These, in turn, have led to identification of the host galaxy of the burst as a late-type galaxy at z=0.16 showing that at least some short-hard bursts occur at cosmological distances in the outskirts of galaxies, and are likely to be due to the merging of compact binaries.
Source:	arXiv, astro-ph/0510190
Other source:	[GID 967690] pmid16208364
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