Spectral analysis of 35 GRBs/XRFs observed with HETE-2/FREGATE
We present a spectral analysis of 35 GRBs detected with the HETE-2 gamma-ray detectors (the FREGATE instrument) in the energy range 7-400 keV. The GRB sample analyzed is made of GRBs localized with the Wide Field X-ray Monitor onboard HETE-2 or with the GRB Interplanetary Network. We derive the spec...
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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Format | Journal Article |
Language | English |
Published |
21.06.2002
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Subjects | |
Online Access | Get full text |
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Summary: | We present a spectral analysis of 35 GRBs detected with the HETE-2 gamma-ray
detectors (the FREGATE instrument) in the energy range 7-400 keV. The GRB
sample analyzed is made of GRBs localized with the Wide Field X-ray Monitor
onboard HETE-2 or with the GRB Interplanetary Network. We derive the spectral
parameters of the time-integrated spectra, and present the distribution of the
low-energy photon index, alpha, and of the peak energy, e_peak . We then
discuss the existence and nature of the recently discovered X-Ray Flashes and
their relationship with classical GRBs. |
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DOI: | 10.48550/arxiv.astro-ph/0206380 |