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Spectral Properties of the Prompt X-ray emission and Afterglow from the Gamma-Ray Burst of 28 February 1997
F. Frontera, E. Costa, L. Piro +18
We report high-energy spectral data of the prompt emission of GRB970228 and its X-ray afterglow. We establish that the nature of the X-ray afterglow emission is non-thermal and sim…
In-flight performances of the BeppoSAX Gamma-Ray Burst Monitor
M. Feroci, F. Frontera, E. Costa +13
The Italian-Dutch satellite for X-ray Astronomy BeppoSAX is successfully operating on a 600 km equatorial orbit since May 1996. We present here the in-flight performances of the Ga…
Initial Results from the High Energy Experiment PDS aboard BeppoSAX
F. Frontera, D. Dal Fiume, E. Costa +6
The high energy experiment PDS is one of the Narrow Field Instruments aboard the X-ray astronomy satellite BeppoSAX. It covers the energy band from 15 to 300 keV. Here we report re…
Discovery of the X-Ray Afterglow of the Gamma-Ray Burst of February 28 1997
E. Costa, F. Frontera, J. Heise +23
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 (G…