Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..312..130s&link_type=abstract
Third Rome Workshop on Gamma-Ray Bursts in the Afterglow Era ASP Conference Series, Volume 312, Proceedings of the conference he
Astronomy and Astrophysics
Astronomy
Scientific paper
A short (T50 = 350 ms, 80-300 keV) and hard (photon index of ˜ 1, Ep ˜ 400 keV) GRB020531 was detected by the HETE-2 French Gamma Telescope (FREGATE) and the Wide-field X-ray Monitor (WXM) instruments. Spectral softening is seen in this burst and this property is similar to that of long GRBs.
XRF010213 is the brightest X-ray flash (XRF) event detected by HETE-2. There are two peaks in the WXM 2-18 keV light curve. The time average spectral analysis yields Ep for this burst of ˜ 3 keV.
According to this detailed spectral study, these two extremely different GRBs show spectral parameters and characteristics similar to that of the long bursts. This conclusion suggests that both short/hard GRBs and XRFs are closely related to the long bursts.
Atteia Jean-Luc
Barraud Celine
Boer Michel
Butler Nat
Dezalay Jean-Pascal
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