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

Rie Sato; Takanori Sakamoto; Jun Kataoka; Atsumasa Yoshida; Motoko Suzuki; Junichi Kotoku; Yuji Urata; Yoshihisa Yamamoto; Makoto Arimoto; Toru Tamagawa; Yuji Shirasaki; Ken'ichi Torii; Masaru Matsuoka; Yujin Nakagawa; Toru Yamazaki; Kaoru Tanaka; Miki Maetou; Makoto Yamauchi; Kunio Takagishi; Donald Q. Lamb; Jean Luc Atteia; Roland Vanderspek; Carlo Graziani; Gregory Prigozhin; Joel Villasenor; J. Garrett Jernigan; Geoffrey B. Crew; Kevin Hurley; George R. Ricker; Stanford E. Woosley; Nat Butler; Al Levine; John P. Doty; Timothy Q. Donaghy; Edward E. Fenimore; Mark Galassi; Michel Boer; Jean Pascal Dezalay; Jean François Olive; Joao Braga; Ravi Manchanda; Graziella Pizzichini; Nobuyuki Kawai

doi:10.1093/pasj/57.6.1031

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

Rie Sato, Takanori Sakamoto, Jun Kataoka, Atsumasa Yoshida, Motoko Suzuki, Junichi Kotoku, Yuji Urata, Yoshihisa Yamamoto, Makoto Arimoto, Toru Tamagawa, Yuji Shirasaki, Ken'ichi Torii, Masaru Matsuoka, Yujin Nakagawa, Toru Yamazaki, Kaoru Tanaka, Miki Maetou, Makoto Yamauchi, Kunio Takagishi, Donald Q. LambJean Luc Atteia, Roland Vanderspek, Carlo Graziani, Gregory Prigozhin, Joel Villasenor, J. Garrett Jernigan, Geoffrey B. Crew, Kevin Hurley, George R. Ricker, Stanford E. Woosley, Nat Butler, Al Levine, John P. Doty, Timothy Q. Donaghy, Edward E. Fenimore, Mark Galassi, Michel Boer, Jean Pascal Dezalay, Jean François Olive, Joao Braga, Ravi Manchanda, Graziella Pizzichini, Nobuyuki Kawai

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

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 reported to the GRB Coordinates Network (GCN) about 4 min after the burst. In the prompt emission, the burst had a duration of approximately 125 s, and more than four peaks. We analyzed the time-resolved 2-400 keV 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 (17-52 s after the burst trigger) shows a depletion of low-energy photons below about 50 keV. 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.

Original language	English (US)
Pages (from-to)	1031-1039
Number of pages	9
Journal	Publications of the Astronomical Society of Japan
Volume	57
Issue number	6
DOIs	https://doi.org/10.1093/pasj/57.6.1031
State	Published - 2005
Externally published	Yes

Keywords

Gamma-rays: bursts

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/pasj/57.6.1031

Cite this

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., ... Kawai, N. (2005). HETE-2 localization and observations of the gamma-ray burst GRB 020813. Publications of the Astronomical Society of Japan, 57(6), 1031-1039. https://doi.org/10.1093/pasj/57.6.1031

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, DQ, Atteia, JL, Vanderspek, R, Graziani, C, Prigozhin, G, Villasenor, J, Garrett Jernigan, J, Crew, GB, Hurley, K, Ricker, GR, Woosley, SE, Butler, N, Levine, A, Doty, JP, Donaghy, TQ, Fenimore, EE, Galassi, M, Boer, M, Dezalay, JP, Olive, JF, Braga, J, Manchanda, R, Pizzichini, G & Kawai, N 2005, 'HETE-2 localization and observations of the gamma-ray burst GRB 020813', Publications of the Astronomical Society of Japan, vol. 57, no. 6, pp. 1031-1039. https://doi.org/10.1093/pasj/57.6.1031

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title = "HETE-2 localization and observations of the gamma-ray burst GRB 020813",

abstract = "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 reported to the GRB Coordinates Network (GCN) about 4 min after the burst. In the prompt emission, the burst had a duration of approximately 125 s, and more than four peaks. We analyzed the time-resolved 2-400 keV 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 (17-52 s after the burst trigger) shows a depletion of low-energy photons below about 50 keV. 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.",

keywords = "Gamma-rays: bursts",

author = "Rie Sato and Takanori Sakamoto and Jun Kataoka and Atsumasa Yoshida and Motoko Suzuki and Junichi Kotoku and Yuji Urata and Yoshihisa Yamamoto and Makoto Arimoto and Toru Tamagawa and Yuji Shirasaki and Ken'ichi Torii and Masaru Matsuoka and Yujin Nakagawa and Toru Yamazaki and Kaoru Tanaka and Miki Maetou and Makoto Yamauchi and Kunio Takagishi and Lamb, {Donald Q.} and Atteia, {Jean Luc} and Roland Vanderspek and Carlo Graziani and Gregory Prigozhin and Joel Villasenor and {Garrett Jernigan}, J. and Crew, {Geoffrey B.} and Kevin Hurley and Ricker, {George R.} and Woosley, {Stanford E.} and Nat Butler and Al Levine and Doty, {John P.} and Donaghy, {Timothy Q.} and Fenimore, {Edward E.} and Mark Galassi and Michel Boer and Dezalay, {Jean Pascal} and Olive, {Jean Fran{\c c}ois} and Joao Braga and Ravi Manchanda and Graziella Pizzichini and Nobuyuki Kawai",

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doi = "10.1093/pasj/57.6.1031",

language = "English (US)",

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pages = "1031--1039",

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T1 - HETE-2 localization and observations of the gamma-ray burst GRB 020813

AU - Sato, Rie

AU - Sakamoto, Takanori

AU - Kataoka, Jun

AU - Yoshida, Atsumasa

AU - Suzuki, Motoko

AU - Kotoku, Junichi

AU - Urata, Yuji

AU - Yamamoto, Yoshihisa

AU - Arimoto, Makoto

AU - Tamagawa, Toru

AU - Shirasaki, Yuji

AU - Torii, Ken'ichi

AU - Matsuoka, Masaru

AU - Nakagawa, Yujin

AU - Yamazaki, Toru

AU - Tanaka, Kaoru

AU - Maetou, Miki

AU - Yamauchi, Makoto

AU - Takagishi, Kunio

AU - Lamb, Donald Q.

AU - Atteia, Jean Luc

AU - Vanderspek, Roland

AU - Graziani, Carlo

AU - Prigozhin, Gregory

AU - Villasenor, Joel

AU - Garrett Jernigan, J.

AU - Crew, Geoffrey B.

AU - Hurley, Kevin

AU - Ricker, George R.

AU - Woosley, Stanford E.

AU - Butler, Nat

AU - Levine, Al

AU - Doty, John P.

AU - Donaghy, Timothy Q.

AU - Fenimore, Edward E.

AU - Galassi, Mark

AU - Boer, Michel

AU - Dezalay, Jean Pascal

AU - Olive, Jean François

AU - Braga, Joao

AU - Manchanda, Ravi

AU - Pizzichini, Graziella

AU - Kawai, Nobuyuki

PY - 2005

Y1 - 2005

N2 - 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 reported to the GRB Coordinates Network (GCN) about 4 min after the burst. In the prompt emission, the burst had a duration of approximately 125 s, and more than four peaks. We analyzed the time-resolved 2-400 keV 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 (17-52 s after the burst trigger) shows a depletion of low-energy photons below about 50 keV. 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.

AB - 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 reported to the GRB Coordinates Network (GCN) about 4 min after the burst. In the prompt emission, the burst had a duration of approximately 125 s, and more than four peaks. We analyzed the time-resolved 2-400 keV 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 (17-52 s after the burst trigger) shows a depletion of low-energy photons below about 50 keV. 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.

KW - Gamma-rays: bursts

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U2 - 10.1093/pasj/57.6.1031

DO - 10.1093/pasj/57.6.1031

M3 - Article

AN - SCOPUS:31544460954

SN - 0004-6264

VL - 57

SP - 1031

EP - 1039

JO - Publications of the Astronomical Society of Japan

JF - Publications of the Astronomical Society of Japan

IS - 6

ER -

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

Abstract

Keywords

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