HETE-2 Localization and Observations of the Gamma-Ray Burst GRB 020813

Sato, R.; Sakamoto, T.; Kataoka, J.; Yoshida, A.; Suzuki, M.; Kotoku, J.; Urata, Y.; Yamamoto, Y.; Arimoto, M.; Tamagawa, T.; Shirasaki, Y.; Torii, K.; Matsuoka, M.; Nakagawa, Y.; Yamazaki, T.; Tanaka, K.; Maetou, M.; Yamauchi, M.; Takagishi, K.; Lamb, D. Q.; Atteia, J.-L.; Vanderspek, R.; Graziani, C.; Prigozhin, G.; Villasenor, J.; Jernigan, J. G.; Crew, G. B.; Hurley, K.; Ricker, G. R.; Woosley, S. E.; Butler, N.; Levine, A.; Doty, J. P.; Donaghy, T. Q.; Fenimore, E. E.; Galassi, M.; Boer, M.; Dezalay, J.-P.; Olive, J.-F.; Braga, J.; Manchanda, R.; Pizzichini, G.; Kawai, N.

doi:10.1093/pasj/57.6.1031

論文・著書情報

タイトル

和文:
英文:	HETE-2 Localization and Observations of the Gamma-Ray Burst GRB 020813

著者

和文:

Sato, R., Sakamoto, T., 片岡淳, Yoshida, A., Suzuki, M., Kotoku, J., Urata, Y., Yamamoto, Y., 有元誠, Tamagawa, T., Shirasaki, Y., Torii, K., Matsuoka, M., Nakagawa, Y., Yamazaki, T., Tanaka, K., Maetou, M., Yamauchi, M., Takagishi, K., Lamb, D. Q., Atteia, J.-L., Vanderspek, R., Graziani, C., Prigozhin, G., Villasenor, J., Jernigan, J. G., Crew, G. B., Hurley, K., Ricker, G. R., Woosley, S. E., Butler, N., Levine, A., Doty, J. P., Donaghy, T. Q., Fenimore, E. E., Galassi, M., Boer, M., Dezalay, J.-P., Olive, J.-F., Braga, J., Manchanda, R., Pizzichini, G., 河合誠之.

英文:

Sato, R., Sakamoto, T., Kataoka, J., Yoshida, A., Suzuki, M., Kotoku, J., Urata, Y., Yamamoto, Y., Arimoto, M., Tamagawa, T., Shirasaki, Y., Torii, K., Matsuoka, M., Nakagawa, Y., Yamazaki, T., Tanaka, K., Maetou, M., Yamauchi, M., Takagishi, K., Lamb, D. Q., Atteia, J.-L., Vanderspek, R., Graziani, C., Prigozhin, G., Villasenor, J., Jernigan, J. G., Crew, G. B., Hurley, K., Ricker, G. R., Woosley, S. E., Butler, N., Levine, A., Doty, J. P., Donaghy, T. Q., Fenimore, E. E., Galassi, M., Boer, M., Dezalay, J.-P., Olive, J.-F., Braga, J., Manchanda, R., Pizzichini, G., Kawai, N..

言語

English

掲載誌/書名

和文:
英文:	Publications of the Astronomical Society of Japan

巻, 号, ページ

Vol. 57 pp. 1031-1039

出版年月

2005年12月

出版者

和文:
英文:

会議名称

和文:
英文:

開催地

和文:
英文:

DOI

https://doi.org/10.1093/pasj/57.6.1031

アブストラクト

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 (9859.17s UT) on 2002 August 13. The location was reported to the GRB Coordinates Network (GCN) about 4min after the burst. In the prompt emission, the burst had a duration of approximately 125s, and more than four peaks. We analyzed the time-resolved 2-400keV energy spectra of the prompt emission of GRB 020813 using the Wide Field X-Ray Monitor (WXM) and the French Gamma Telescope (FREGATE) in detail. We found that the early part of the burst (17-52s after the burst trigger) shows a depletion of low-energy photons below about 50keV. It is difficult to explain the depletion by either synchrotron self-absorption or Comptonization. One possibility is that the low-energy depletion may be understood as a mixture of ``jitter'' radiation with the usual synchrotron radiation component.

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