An optically dark GRB observed by HETE-2: GRB 051022

Yujin E. Nakagawa, Atsumasa Yoshida, Satoshi Sugita, Kaoru Tanaka, Nobuyuki Ishikawa, Toru Tamagawa, Motoko Suzuki, Yuji Shirasaki, Nobuyuki Kawai, Masaru Matsuoka, Jean Luc Atteia, Alexandre Pelangeon, Roland Vanderspek, Geoffrey B. Crew, Joel S. Villasenor, Nathaniel Butler, John P. Doty, George R. Ricker, Graziella Pizzichini, Timothy Q. DonaghyDonald Q. Lamb, Carlo Graziani, Rie Sato, Miki Maetou, Makoto Arimoto, Jun'Ichi Kotoku, J. Garrett Jernigan, Takanori Sakamoto, Jean François Olive, Michel Boer, Edward E. Fenimore, Mark Galassi, Stanford E. Woosley, Makoto Yamauchi, Kunio Takagishi, Isamu Hatsukade

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

GRB 051022 was detected at 13:07:58 on 2005 October 22 UT by HETE-2. The location of GRB 051022 was determined immediately by the flight localization system. This burst contained multiple pulses, and had a rather long duration of about 190s. The detections of candidate X-ray and radio afterglows were reported, whereas no optical afterglow was found. Optical spectroscopic observations of the host galaxy revealed a redshift of z = 0.8. Using data derived by a HETE-2 observation of the prompt emission, we found absorption of N H = (8.8 -29 +3.1) x 10 22cm -2 and visual extinction of Av = 49 -16 +17 mag in the host galaxy. If this is the case, no detection of any optical transient would be quite reasonable. The absorption derived by Swift XRT observations of the afterglow is fully consistent with those obtained from an early HETE-2 observation of the prompt emission. Our analysis implies an interpretation that the absorbing medium may be outside the external shock at R ∼ 10 16cm, which could be a dusty molecular cloud.

Original languageEnglish (US)
JournalPublications of the Astronomical Society of Japan
Volume58
Issue number4
StatePublished - 2006
Externally publishedYes

Fingerprint

afterglows
extinction
flight
radio
galaxies
molecular clouds
bursts
shock
detection
pulses
x rays
analysis

Keywords

  • Gamma rays: observations
  • Star: individual (GRB 051022)
  • X-rays: ISM

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Nakagawa, Y. E., Yoshida, A., Sugita, S., Tanaka, K., Ishikawa, N., Tamagawa, T., ... Hatsukade, I. (2006). An optically dark GRB observed by HETE-2: GRB 051022. Publications of the Astronomical Society of Japan, 58(4).

An optically dark GRB observed by HETE-2 : GRB 051022. / Nakagawa, Yujin E.; Yoshida, Atsumasa; Sugita, Satoshi; Tanaka, Kaoru; Ishikawa, Nobuyuki; Tamagawa, Toru; Suzuki, Motoko; Shirasaki, Yuji; Kawai, Nobuyuki; Matsuoka, Masaru; Atteia, Jean Luc; Pelangeon, Alexandre; Vanderspek, Roland; Crew, Geoffrey B.; Villasenor, Joel S.; Butler, Nathaniel; Doty, John P.; Ricker, George R.; Pizzichini, Graziella; Donaghy, Timothy Q.; Lamb, Donald Q.; Graziani, Carlo; Sato, Rie; Maetou, Miki; Arimoto, Makoto; Kotoku, Jun'Ichi; Jernigan, J. Garrett; Sakamoto, Takanori; Olive, Jean François; Boer, Michel; Fenimore, Edward E.; Galassi, Mark; Woosley, Stanford E.; Yamauchi, Makoto; Takagishi, Kunio; Hatsukade, Isamu.

In: Publications of the Astronomical Society of Japan, Vol. 58, No. 4, 2006.

Research output: Contribution to journalArticle

Nakagawa, YE, Yoshida, A, Sugita, S, Tanaka, K, Ishikawa, N, Tamagawa, T, Suzuki, M, Shirasaki, Y, Kawai, N, Matsuoka, M, Atteia, JL, Pelangeon, A, Vanderspek, R, Crew, GB, Villasenor, JS, Butler, N, Doty, JP, Ricker, GR, Pizzichini, G, Donaghy, TQ, Lamb, DQ, Graziani, C, Sato, R, Maetou, M, Arimoto, M, Kotoku, JI, Jernigan, JG, Sakamoto, T, Olive, JF, Boer, M, Fenimore, EE, Galassi, M, Woosley, SE, Yamauchi, M, Takagishi, K & Hatsukade, I 2006, 'An optically dark GRB observed by HETE-2: GRB 051022', Publications of the Astronomical Society of Japan, vol. 58, no. 4.
Nakagawa YE, Yoshida A, Sugita S, Tanaka K, Ishikawa N, Tamagawa T et al. An optically dark GRB observed by HETE-2: GRB 051022. Publications of the Astronomical Society of Japan. 2006;58(4).
Nakagawa, Yujin E. ; Yoshida, Atsumasa ; Sugita, Satoshi ; Tanaka, Kaoru ; Ishikawa, Nobuyuki ; Tamagawa, Toru ; Suzuki, Motoko ; Shirasaki, Yuji ; Kawai, Nobuyuki ; Matsuoka, Masaru ; Atteia, Jean Luc ; Pelangeon, Alexandre ; Vanderspek, Roland ; Crew, Geoffrey B. ; Villasenor, Joel S. ; Butler, Nathaniel ; Doty, John P. ; Ricker, George R. ; Pizzichini, Graziella ; Donaghy, Timothy Q. ; Lamb, Donald Q. ; Graziani, Carlo ; Sato, Rie ; Maetou, Miki ; Arimoto, Makoto ; Kotoku, Jun'Ichi ; Jernigan, J. Garrett ; Sakamoto, Takanori ; Olive, Jean François ; Boer, Michel ; Fenimore, Edward E. ; Galassi, Mark ; Woosley, Stanford E. ; Yamauchi, Makoto ; Takagishi, Kunio ; Hatsukade, Isamu. / An optically dark GRB observed by HETE-2 : GRB 051022. In: Publications of the Astronomical Society of Japan. 2006 ; Vol. 58, No. 4.
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abstract = "GRB 051022 was detected at 13:07:58 on 2005 October 22 UT by HETE-2. The location of GRB 051022 was determined immediately by the flight localization system. This burst contained multiple pulses, and had a rather long duration of about 190s. The detections of candidate X-ray and radio afterglows were reported, whereas no optical afterglow was found. Optical spectroscopic observations of the host galaxy revealed a redshift of z = 0.8. Using data derived by a HETE-2 observation of the prompt emission, we found absorption of N H = (8.8 -29 +3.1) x 10 22cm -2 and visual extinction of Av = 49 -16 +17 mag in the host galaxy. If this is the case, no detection of any optical transient would be quite reasonable. The absorption derived by Swift XRT observations of the afterglow is fully consistent with those obtained from an early HETE-2 observation of the prompt emission. Our analysis implies an interpretation that the absorbing medium may be outside the external shock at R ∼ 10 16cm, which could be a dusty molecular cloud.",
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T1 - An optically dark GRB observed by HETE-2

T2 - GRB 051022

AU - Nakagawa, Yujin E.

AU - Yoshida, Atsumasa

AU - Sugita, Satoshi

AU - Tanaka, Kaoru

AU - Ishikawa, Nobuyuki

AU - Tamagawa, Toru

AU - Suzuki, Motoko

AU - Shirasaki, Yuji

AU - Kawai, Nobuyuki

AU - Matsuoka, Masaru

AU - Atteia, Jean Luc

AU - Pelangeon, Alexandre

AU - Vanderspek, Roland

AU - Crew, Geoffrey B.

AU - Villasenor, Joel S.

AU - Butler, Nathaniel

AU - Doty, John P.

AU - Ricker, George R.

AU - Pizzichini, Graziella

AU - Donaghy, Timothy Q.

AU - Lamb, Donald Q.

AU - Graziani, Carlo

AU - Sato, Rie

AU - Maetou, Miki

AU - Arimoto, Makoto

AU - Kotoku, Jun'Ichi

AU - Jernigan, J. Garrett

AU - Sakamoto, Takanori

AU - Olive, Jean François

AU - Boer, Michel

AU - Fenimore, Edward E.

AU - Galassi, Mark

AU - Woosley, Stanford E.

AU - Yamauchi, Makoto

AU - Takagishi, Kunio

AU - Hatsukade, Isamu

PY - 2006

Y1 - 2006

N2 - GRB 051022 was detected at 13:07:58 on 2005 October 22 UT by HETE-2. The location of GRB 051022 was determined immediately by the flight localization system. This burst contained multiple pulses, and had a rather long duration of about 190s. The detections of candidate X-ray and radio afterglows were reported, whereas no optical afterglow was found. Optical spectroscopic observations of the host galaxy revealed a redshift of z = 0.8. Using data derived by a HETE-2 observation of the prompt emission, we found absorption of N H = (8.8 -29 +3.1) x 10 22cm -2 and visual extinction of Av = 49 -16 +17 mag in the host galaxy. If this is the case, no detection of any optical transient would be quite reasonable. The absorption derived by Swift XRT observations of the afterglow is fully consistent with those obtained from an early HETE-2 observation of the prompt emission. Our analysis implies an interpretation that the absorbing medium may be outside the external shock at R ∼ 10 16cm, which could be a dusty molecular cloud.

AB - GRB 051022 was detected at 13:07:58 on 2005 October 22 UT by HETE-2. The location of GRB 051022 was determined immediately by the flight localization system. This burst contained multiple pulses, and had a rather long duration of about 190s. The detections of candidate X-ray and radio afterglows were reported, whereas no optical afterglow was found. Optical spectroscopic observations of the host galaxy revealed a redshift of z = 0.8. Using data derived by a HETE-2 observation of the prompt emission, we found absorption of N H = (8.8 -29 +3.1) x 10 22cm -2 and visual extinction of Av = 49 -16 +17 mag in the host galaxy. If this is the case, no detection of any optical transient would be quite reasonable. The absorption derived by Swift XRT observations of the afterglow is fully consistent with those obtained from an early HETE-2 observation of the prompt emission. Our analysis implies an interpretation that the absorbing medium may be outside the external shock at R ∼ 10 16cm, which could be a dusty molecular cloud.

KW - Gamma rays: observations

KW - Star: individual (GRB 051022)

KW - X-rays: ISM

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