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 Barraud, C, Olive, J-F, Lestrade, J. P, Atteia, J-L, Hurley, K, Ricker, G, Lamb, D. Q, Kawai, N, Boer, M, Dezalay, J-P, Pizzichini, G, Vanderspek, R, Crew, G, Doty, J, Monelly, G, Villasenor, J, Butler, N, Levine, A, Yoshida, A, Shirasaki, Y, Sakamoto, T, Tamagawa, T, Torii, K, Matsuoka, M, Fenimore, E. E, Galassi, M, Tavenner, T, Donaghy, T. Q, Graziani, C, Jernigan, J. G
Format Journal Article
LanguageEnglish
Published 21.06.2002
Subjects
Physics - Astrophysics of Galaxies
Physics - Cosmology and Nongalactic Astrophysics
Physics - Earth and Planetary Astrophysics
Physics - High Energy Astrophysical Phenomena
Physics - Instrumentation and Methods for Astrophysics
Physics - Solar and Stellar Astrophysics
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Abstract 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.
AbstractList 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.
Author Graziani, C
Yoshida, A
Ricker, G
Doty, J
Tamagawa, T
Lamb, D. Q
Galassi, M
Torii, K
Vanderspek, R
Atteia, J-L
Donaghy, T. Q
Levine, A
Hurley, K
Kawai, N
Pizzichini, G
Crew, G
Shirasaki, Y
Olive, J-F
Matsuoka, M
Fenimore, E. E
Lestrade, J. P
Villasenor, J
Barraud, C
Tavenner, T
Jernigan, J. G
Butler, N
Sakamoto, T
Dezalay, J-P
Boer, M
Monelly, G
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BackLink https://doi.org/10.1051/0004-6361:20030074$$DView published paper (Access to full text may be restricted)
https://doi.org/10.48550/arXiv.astro-ph/0206380$$DView paper in arXiv
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Snippet 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...
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SubjectTerms Physics - Astrophysics of Galaxies
Physics - Cosmology and Nongalactic Astrophysics
Physics - Earth and Planetary Astrophysics
Physics - High Energy Astrophysical Phenomena
Physics - Instrumentation and Methods for Astrophysics
Physics - Solar and Stellar Astrophysics
Title Spectral analysis of 35 GRBs/XRFs observed with HETE-2/FREGATE
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