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Observations of Gamma-Ray Bursts by HETE-2The High Energy Transient Explorer 2 (HETE-2), launched in October 2000, is currently localizing gamma-ray bursts (GRBs) at a rate of approximately 20/yr, many in real time. As of August 2003, HETE-2 had localized 43 GRBs; 16 localizations had led to the detection of an X-ray, optical, or radio afterglows. The prompt position notification of HETE-2 enabled probing the nature of so-called "dark bursts" for which no optical afterglows were found despite of accurate localizations. In some cases, the optical afterglow was found to be intrinsically faint , and its flux declined rapidly. In another case, the optical emission was likely to be extinguished by the dust in the vicinity of the GRB source. The bright afterglows of GRB021004 and GRB030329 were observed in unprecedented details by telescopes around the world. Strong evidence for the association of long GRBs with the core-collapse supernovae was found. HETE-2 has localized almost as many X-ray rich GRBs as classical GRBs. The nature of the X-ray rich GRBs and X-ray flashes have been studied systematically with HETE-2, and they are found to have many properties in common with the classical GRBs, suggesting that they are a single phenomenon.
Document ID
20120002709
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Kawai, N.
(Tokyo Inst. of Tech. Japan)
Matsuoka, M.
(National Space Development Agency Japan)
Yoshida, A.
(Institute of Physical and Chemical Research Japan)
Shirasaki, Y.
(Institute of Physical and Chemical Research Japan)
Ricker, G.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Doty, J.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Vanderspek, R.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Crew, G.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Villasenor, J.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Atteia, J.-L.
(Observatoire de Midi-Pyrenees France)
Fenimore, E. E.
(Los Alamos National Lab. NM, United States)
Galassi, M.
(Los Alamos National Lab. NM, United States)
Lamb, D. Q.
(Chicago Univ. IL, United States)
Graziani, C.
(Chicago Univ. IL, United States)
Hurley, K.
(California Univ. Berkeley, CA, United States)
Jernigan, J. G.
(California Univ. Berkeley, CA, United States)
Woosley, S.
(California Univ. Santa Cruz, CA, United States)
Martel, F.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Monnelly, G.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Prigozhin, G.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Olive, J.-F.
(Centre d'Etude Spatiale des Rayonnements Toulouse, France)
Dezalay, J.P.
(Centre d'Etude Spatiale des Rayonnements Toulouse, France)
Boer, M.
(Centre d'Etude Spatiale des Rayonnements Toulouse, France)
Pizzichini, G.
(Consiglio Nazionale delle Ricerche Tesre, Italy)
Cline, T.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Frontiers of Cosmic Ray Science
Volume: 8
ISSN: 0915-8502
ISBN: 4-946443-87-8
Subject Category
Astrophysics
Meeting Information
Meeting: 28th International Cosmic Ray Conference
Location: Tsukuba
Country: Japan
Start Date: July 31, 2003
End Date: August 7, 2003
Distribution Limits
Public
Copyright
Other

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