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論文・著書情報
| タイトル |
| 和文: | |
| 英文: | Swift and Suzaku Observations of the X-Ray Afterglow from the GRB 060105 |
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| 著者 |
| 和文: |
Tashiro, M. S.,
Abe, K.,
Angelini, L.,
Barthelmy, S.,
Gehrels, N.,
Ishikawa, N.,
Kaluzienski, L. J.,
河合 誠之,
Kelley, R. L.,
Kinugasa, K.,
Kodaira, H.,
Kohmura, T.,
Kubota, K.,
Maeda, Y.,
Maeno, S.,
Murakami, H.,
Murakami, T.,
Nakagawa, Y. E.,
Nakazawa, K.,
Nousek, J.,
Okuno, S.,
Onda, K.,
Reeves, J. N.,
Ricker, G.,
Sato, G.,
Sonoda, E.,
Suzuki, M.,
Takahashi, T.,
Tamagawa, T.,
Torii, K.,
Ueda, Y.,
Urata, Y.,
Yamaoka, K.,
Yamauchi, M.,
Yonetoku, D.,
Yoshida, A.,
Yoshinari, S..
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| 英文: |
Tashiro, M. S.,
Abe, K.,
Angelini, L.,
Barthelmy, S.,
Gehrels, N.,
Ishikawa, N.,
Kaluzienski, L. J.,
Kawai, N.,
Kelley, R. L.,
Kinugasa, K.,
Kodaira, H.,
Kohmura, T.,
Kubota, K.,
Maeda, Y.,
Maeno, S.,
Murakami, H.,
Murakami, T.,
Nakagawa, Y. E.,
Nakazawa, K.,
Nousek, J.,
Okuno, S.,
Onda, K.,
Reeves, J. N.,
Ricker, G.,
Sato, G.,
Sonoda, E.,
Suzuki, M.,
Takahashi, T.,
Tamagawa, T.,
Torii, K.,
Ueda, Y.,
Urata, Y.,
Yamaoka, K.,
Yamauchi, M.,
Yonetoku, D.,
Yoshida, A.,
Yoshinari, S..
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| 言語 |
English |
| 掲載誌/書名 |
| 和文: | |
| 英文: | Publications of the Astronomical Society of Japan |
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巻, 号, ページ
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Vol. 59
pp. 361-367
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| 出版年月 |
2007年1月 |
| 出版者 |
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| 会議名称 |
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| 開催地 |
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| DOI |
https://doi.org/10.1093/pasj/59.sp1.s361 |
| アブストラクト |
Results are presented of early X-ray afterglow observations of GRB 060105 by Swift and Suzaku. The bright, long gamma-ray burst GRB 060105 triggered the Swift Burst Alert Telescope at 06:49:28 on 2006 January 5 (T0). The Suzaku team commenced a pre-planned target of opportunity observation at 19ks (5.3hr) after the Swift trigger. The X-ray flux faded during observations from 6.8 × 10-9 erg s-1 cm-2 (at T0 + 87s with the Swift/XRT) to 1.5 × 10-13 erg s-1 cm-2 [at T0 + 94-101 ks with the Suzaku X-ray Imaging Spectrometer (XIS)] in the 2-10keV energy band. Following prompt emission and successive very steep decay, a shallow decay was observed from T0 + 187s to T0 + 1287s. After an observation gap during T0 + (1.5-3) ks, an extremely early steep decay was observed in T0 + (4-30) ks. The lightcurve flattened again at T0 + 30 ks, and another steep decay followed from T0 + 50 ks to the end of observations. Both steep decays 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°. The unique Suzaku/XIS data allow us to set very tight upper limits on line emission or absorption in this GRB. For the reported pseudo-redshift of z = 4.0 ± 1.3 the upper limit on the iron line equivalent width is 50eV. |
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