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Nature 460, 1091-1092 (27 August 2009) | doi:10.1038/4601091a; Published online 26 August 2009
There is a Correction (1 October 2009) associated with this document.
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Gamma-ray bursts: Maybe not so old after all
Enrico Ramirez-Ruiz1 & William Lee2
Abstract
The discovery of a short-lived 
-ray burst at a surprisingly early epoch in the history of the Universe shows how much is still unknown about the evolution of the parent systems of such bursts.
Early on the morning of 14 July 2007, NASA's Swift spacecraft observed a brief flash of very-high-energy photons, in an event known as a -ray burst (GRB). The spacecraft's wide-field -ray monitor established the position of the burst, dubbed GRB 070714B, and within seconds had imaged it with its X-ray telescope, finding a rapidly fading source.
- Enrico Ramirez-Ruiz is in the Department of Astronomy and Astrophysics, University of California, Santa Cruz, California 95064, USA.
Email: enrico@ucolick.org - William Lee is at the Instituto de Astronomía, Universidad Nacional Autónoma de México, Mexico DF 04510, Mexico.
Email: wlee@astroscu.unam.mx
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