The Suzaku-Swift joint observation of the early X-ray afterglow of GRB060105

Makoto S. Tashiro, Keiichi Abe, Lorella Angelini, Scott Barthelmy, Neil Gehrels, Nobuyuki Ishikawa, Louis J. Kaluzienski, Nobuyuki Kawai, Richard L. Kelley, Kenzo Kinugasa, Hironobu Kodaira, Takayoshi Kohmura, Kaori Kubota, Yoshitomo Maeda, Shouta Maeno, Hiroshi Murakami, Toshio Murakami, Yujin E. Nakagawa, Kazuhiro Nakazawa, John NousekShin'ya Okuno, Kaori Onda, James N. Reeves, George Ricker, Goro Sato, Eri Sonoda, Motoko Suzuki, Tadayuki Takahashi, Toru Tamagawa, KeN'Ichi Torii, Yoshihiro Ueda, Yuji Urata, Kazutaka Yamaoka, Makoto Yamauchi, Daisuke Yonetoku, Atsumasa Yoshida, Satoru Yoshinari

Research output: Contribution to journalArticle

Abstract

Results are presented of a Suzaku and Swift joint observation for an early X-ray afterglow of GRB 060105. The bright, long gamma-ray burst GRB 060105 triggered the Swift Burst Alert Telescope (BAT) at 06:49:28 on 5 January 2006 (T0). The Suzaku team commenced a pre-planned target of opportunity observation at 12:10 and continued till 12:00 on January 6. The X-ray flux faded during the observations from 6.8 × 10-9 erg s _1cm-2 to 1.5 × 10-13 erg s _1cm-2 in the 2-10 keV energy band. Following the prompt emission and successive "very steep decay", a "shallow decay" was observed from T0 + 187 s to T0 + 1287 s. After an observation gap during T0 + (1.5 - 3) ks, an extremely early steep decay was observed in T0 + (4-30) ks. The steep decay exhibited decay indices of 2.3 - 2.4. This very early break, if it is a jet break, is the earliest case among X-ray afterglow observations, suggesting a very narrow jet whose opening angle is well below 1°.

Original languageEnglish
Pages (from-to)3-6
Number of pages4
JournalProgress of Theoretical Physics Supplement
Issue number169
Publication statusPublished - 2007

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afterglows
decay
x rays
gamma ray bursts
energy bands
bursts
telescopes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Tashiro, M. S., Abe, K., Angelini, L., Barthelmy, S., Gehrels, N., Ishikawa, N., ... Yoshinari, S. (2007). The Suzaku-Swift joint observation of the early X-ray afterglow of GRB060105. Progress of Theoretical Physics Supplement, (169), 3-6.

The Suzaku-Swift joint observation of the early X-ray afterglow of GRB060105. / Tashiro, Makoto S.; Abe, Keiichi; Angelini, Lorella; Barthelmy, Scott; Gehrels, Neil; Ishikawa, Nobuyuki; Kaluzienski, Louis J.; Kawai, Nobuyuki; Kelley, Richard L.; Kinugasa, Kenzo; Kodaira, Hironobu; Kohmura, Takayoshi; Kubota, Kaori; Maeda, Yoshitomo; Maeno, Shouta; Murakami, Hiroshi; Murakami, Toshio; Nakagawa, Yujin E.; Nakazawa, Kazuhiro; Nousek, John; Okuno, Shin'ya; Onda, Kaori; Reeves, James N.; Ricker, George; Sato, Goro; Sonoda, Eri; Suzuki, Motoko; Takahashi, Tadayuki; Tamagawa, Toru; Torii, KeN'Ichi; Ueda, Yoshihiro; Urata, Yuji; Yamaoka, Kazutaka; Yamauchi, Makoto; Yonetoku, Daisuke; Yoshida, Atsumasa; Yoshinari, Satoru.

In: Progress of Theoretical Physics Supplement, No. 169, 2007, p. 3-6.

Research output: Contribution to journalArticle

Tashiro, MS, Abe, K, Angelini, L, Barthelmy, S, Gehrels, N, Ishikawa, N, Kaluzienski, LJ, Kawai, N, Kelley, RL, Kinugasa, K, Kodaira, H, Kohmura, T, Kubota, K, Maeda, Y, Maeno, S, Murakami, H, Murakami, T, Nakagawa, YE, Nakazawa, K, Nousek, J, Okuno, S, Onda, K, Reeves, JN, Ricker, G, Sato, G, Sonoda, E, Suzuki, M, Takahashi, T, Tamagawa, T, Torii, KI, Ueda, Y, Urata, Y, Yamaoka, K, Yamauchi, M, Yonetoku, D, Yoshida, A & Yoshinari, S 2007, 'The Suzaku-Swift joint observation of the early X-ray afterglow of GRB060105', Progress of Theoretical Physics Supplement, no. 169, pp. 3-6.
Tashiro MS, Abe K, Angelini L, Barthelmy S, Gehrels N, Ishikawa N et al. The Suzaku-Swift joint observation of the early X-ray afterglow of GRB060105. Progress of Theoretical Physics Supplement. 2007;(169):3-6.
Tashiro, Makoto S. ; Abe, Keiichi ; Angelini, Lorella ; Barthelmy, Scott ; Gehrels, Neil ; Ishikawa, Nobuyuki ; Kaluzienski, Louis J. ; Kawai, Nobuyuki ; Kelley, Richard L. ; Kinugasa, Kenzo ; Kodaira, Hironobu ; Kohmura, Takayoshi ; Kubota, Kaori ; Maeda, Yoshitomo ; Maeno, Shouta ; Murakami, Hiroshi ; Murakami, Toshio ; Nakagawa, Yujin E. ; Nakazawa, Kazuhiro ; Nousek, John ; Okuno, Shin'ya ; Onda, Kaori ; Reeves, James N. ; Ricker, George ; Sato, Goro ; Sonoda, Eri ; Suzuki, Motoko ; Takahashi, Tadayuki ; Tamagawa, Toru ; Torii, KeN'Ichi ; Ueda, Yoshihiro ; Urata, Yuji ; Yamaoka, Kazutaka ; Yamauchi, Makoto ; Yonetoku, Daisuke ; Yoshida, Atsumasa ; Yoshinari, Satoru. / The Suzaku-Swift joint observation of the early X-ray afterglow of GRB060105. In: Progress of Theoretical Physics Supplement. 2007 ; No. 169. pp. 3-6.
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T1 - The Suzaku-Swift joint observation of the early X-ray afterglow of GRB060105

AU - Tashiro, Makoto S.

AU - Abe, Keiichi

AU - Angelini, Lorella

AU - Barthelmy, Scott

AU - Gehrels, Neil

AU - Ishikawa, Nobuyuki

AU - Kaluzienski, Louis J.

AU - Kawai, Nobuyuki

AU - Kelley, Richard L.

AU - Kinugasa, Kenzo

AU - Kodaira, Hironobu

AU - Kohmura, Takayoshi

AU - Kubota, Kaori

AU - Maeda, Yoshitomo

AU - Maeno, Shouta

AU - Murakami, Hiroshi

AU - Murakami, Toshio

AU - Nakagawa, Yujin E.

AU - Nakazawa, Kazuhiro

AU - Nousek, John

AU - Okuno, Shin'ya

AU - Onda, Kaori

AU - Reeves, James N.

AU - Ricker, George

AU - Sato, Goro

AU - Sonoda, Eri

AU - Suzuki, Motoko

AU - Takahashi, Tadayuki

AU - Tamagawa, Toru

AU - Torii, KeN'Ichi

AU - Ueda, Yoshihiro

AU - Urata, Yuji

AU - Yamaoka, Kazutaka

AU - Yamauchi, Makoto

AU - Yonetoku, Daisuke

AU - Yoshida, Atsumasa

AU - Yoshinari, Satoru

PY - 2007

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N2 - Results are presented of a Suzaku and Swift joint observation for an early X-ray afterglow of GRB 060105. The bright, long gamma-ray burst GRB 060105 triggered the Swift Burst Alert Telescope (BAT) at 06:49:28 on 5 January 2006 (T0). The Suzaku team commenced a pre-planned target of opportunity observation at 12:10 and continued till 12:00 on January 6. The X-ray flux faded during the observations from 6.8 × 10-9 erg s _1cm-2 to 1.5 × 10-13 erg s _1cm-2 in the 2-10 keV energy band. Following the prompt emission and successive "very steep decay", a "shallow decay" was observed from T0 + 187 s to T0 + 1287 s. After an observation gap during T0 + (1.5 - 3) ks, an extremely early steep decay was observed in T0 + (4-30) ks. The steep decay exhibited decay indices of 2.3 - 2.4. This very early break, if it is a jet break, is the earliest case among X-ray afterglow observations, suggesting a very narrow jet whose opening angle is well below 1°.

AB - Results are presented of a Suzaku and Swift joint observation for an early X-ray afterglow of GRB 060105. The bright, long gamma-ray burst GRB 060105 triggered the Swift Burst Alert Telescope (BAT) at 06:49:28 on 5 January 2006 (T0). The Suzaku team commenced a pre-planned target of opportunity observation at 12:10 and continued till 12:00 on January 6. The X-ray flux faded during the observations from 6.8 × 10-9 erg s _1cm-2 to 1.5 × 10-13 erg s _1cm-2 in the 2-10 keV energy band. Following the prompt emission and successive "very steep decay", a "shallow decay" was observed from T0 + 187 s to T0 + 1287 s. After an observation gap during T0 + (1.5 - 3) ks, an extremely early steep decay was observed in T0 + (4-30) ks. The steep decay exhibited decay indices of 2.3 - 2.4. This very early break, if it is a jet break, is the earliest case among X-ray afterglow observations, suggesting a very narrow jet whose opening angle is well below 1°.

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