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arxiv astro-ph/9706065 v1 pith:G5HDMRNI submitted 1997-06-06 astro-ph

Discovery of the X-Ray Afterglow of the Gamma-Ray Burst of February 28 1997

E. Costa , F. Frontera , J. Heise , M. Feroci , J. in 't Zand , F. Fiore , M.N. Cinti , D. Dal Fiume
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L. Nicastro M. Orlandini E. Palazzi M. Rapisarda G. Zavattini R. Jager A. Parmar A.Owens S.Molendi G. Cusumano M.C. Maccarone S. Giarrusso A. Coletta L.A. Antonelli P. Giommi J.M. Muller L. Piro R.C. Butler
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keywords x-rayafterglowburstgamma-raysourcebeppo-saxdetecteddiscovery
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Here we report the discovery in the X-ray band of the first afterglow of a gamma-ray burst. It was detected and quickly positioned by the Beppo-SAX satellite on 1997 February 28 (GRB970228). The X-ray afterglow source was detected with the X-ray telescopes aboard the same satellite about eight hours after the burst and faded away in a few days with a power law decay function. The energetic content of the X-ray afterglow results to be a significant fraction of gamma-ray burst energetics. The Beppo-SAX detection and fast imaging of GRB970228 started a multiwavelength campaign that lead to the identification of a fading optical source in a position consistent with the X-ray source.

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Cited by 3 Pith papers

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  3. Early Optical Follow-up of Gamma-Ray Bursts: The Critical Role of Robotic Telescopes

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    A review of early optical GRB features including prompt emission, reverse shocks, and afterglow onset, highlighting robotic telescopes' role in constraining jet Lorentz factors and magnetization.