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The X-ray afterglow of GRB980519

L. Nicastro·L. Amati·L. A. Antonelli·E. Costa·G. Cusumano·M. Feroci·F. Frontera·E. Palazzi·E. Pian·L. Piro
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Abstract

Over a total of 20 gamma-ray bursts localized with arcmin accuracies, GRB980519 represents the 13th detected by the BeppoSAX Wide Field Cameras. An X-ray TOO observation performed by the BeppoSAX Narrow Field Instruments, starting about 9.5 hours after the high energy event, revealed X-ray afterglow emission in the 0.1--10 keV energy range. The flux decay was particularly fast with a power-law index of ~ 1.8. This is the fastest decay so far measured. Signs of bursting activity are evident. The power-law spectral index of 2.8 (+0.6, -0.5) is quite soft but not unique among GRB afterglows.

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L. Nicastro, L. Amati, L. A. Antonelli, E. Costa, G. Cusumano, M. Feroci, F. Frontera, E. Palazzi, E. Pian, L. Piro. 1999-04-13. The X-ray afterglow of GRB980519. https://doi.org/10.1051/aas%3A1999298

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