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03 November 2024
 
  » arxiv » astro-ph/9706065

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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 ; 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 ;
Date 6 Jun 1997
Subject astro-ph
AbstractHere 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.
Source arXiv, astro-ph/9706065
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