SUCRA(さくら: Saitama University Cyber Repository of Academic Resources)は、埼玉大学に在籍する研究者の学術雑誌論文、紀要論文、科学研究費補助金成果報告書、学位論文、研究発表プレゼン資料などを登録し、広く世界に発信しています。 埼玉大学に在籍する皆様は、著作物をSUCRAを通じて発信することができます。詳しくは「成果物の登録方法」をご覧ください。
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
著者 所属
埼玉大学大学院理工学研究科物質科学部門
著者 所属(別言語)
Graduate School of Science and Engineering, Saitama University
雑誌名
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
巻
59
ページ
S361 - S367
発行年
2007
年月次
2007
出版者名
Astronomical Society of Japan
ISSN
00046264
抄録
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 (T-0). The Suzaku team commenced a pre-planned target of opportunity observation at 19 ks (5.3 hr) after the Swift trigger. The X-ray flux faded during observations from 6.8 x 10(-9) ergs(-1) cm(-2) (at T-0 + 87 s with the Swift/XRT) to 1.5 x 10(-13) erg s(-1) cm(-2) [at T-0 + 94-101 ks with the Suzaku X-ray Imaging Spectrometer (XIS)] in the 2-10 keV energy band. Following prompt emission and successive very steep decay, a shallow decay was observed from To + 187 s to T-0 + 1287 s. After an observation gap during T-0 + (1.5-3) ks, an extremely early steep decay was observed in T-0 + (4-30) ks. The lightcurve flattened again at T-0 + 30ks, and another steep decay followed from T-0 + 50ks 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 degrees. 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 50 eV.
Swift and Suzaku observations of the X-ray afterglow from the GRB 060105
A1002397.pdf
(519.58KB)
SUCRAの概要
