HETE-2 localization and observation of the gamma-ray burst GRB 020813

Sato, R. and Sakamoto, T. and Kawai, N. and Yoshida, A. and Matsuoka, M. and Shirasaki, Y. and Tamagawa, T. and Suzuki, M. and Nakagawa, Y. and Ricker, G. R. and Lamb, D. Q. and Atteia, J.-L. and Graziani, C. and Vanderspek, R. and Crew, G. B. and Villasenor, J. and Fenimore, E. E. (2005) HETE-2 localization and observation of the gamma-ray burst GRB 020813. Il nuovo cimento C, 28 (3). pp. 343-346. ISSN 1826-9885

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A bright, long gamma-ray burst (GRB) was detected and localized by the instruments on board the High Energy Transient Explorer 2 satellite (HETE-2) at 02:44:19.17 UTC (9859.17 s UT) on 2002 August 13. The location was to the GRB Coordinates Network (GCN) about 4 minutes after the burst allowing, early observations of a counterpart in the optical. In the prompt emission, the burst had a duration of approximately 125 s, and more than four peaks. We analyzed the time-resolved energy spectrum of the prompt emission of GRB020813 using the Wide Field X-ray Monitor (WXM) and the French Gamma Telescope (FREGATE) in 2–400 keV in detail. We find that the former part of the burst shows extremely hard X-ray spectrum.

Item Type: Article
Additional Information: Paper presented at the “4th Workshop on Gamma-Ray Burst in the Afterglow Era”, Rome, October 18-22, 2004.
Uncontrolled Keywords: γ-ray sources; γ-ray bursts
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 16 Mar 2020 10:10
Last Modified: 16 Mar 2020 10:10
URI: http://eprints.bice.rm.cnr.it/id/eprint/15636

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