Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..312...59b&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
On December 25, 2000, FREGATE (the gamma-ray detector on board HETE-2) detected one of its first gamma ray burst and the brightest one, GRB001225 called the ``Chrismas Burst''. We present in this study the spectrum of the entire burst and we show that it cannot be fit with the usual Band function, and requires an additional component. We also study the spectral evolution of the burst through the evolution of the fit parameters. And finally we discuss the different possibilities which can explain this unusual spectrum.
Atteia Jean-Luc
Barraud Celine
Butler Nat
Crew Geoff
Dezalay Jean-Pascal
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