Swift and Suzaku Observations of the X-Ray Afterglow from the GRB 060105-猫眼课题宝

DOI：

10.1093/pasj/59.sp1.s361

发表时间：

2006-09

期刊：

Publications of the Astronomical Society of Japan

影响因子：

2.3

通讯作者：

中科院分区：

物理与天体物理4区

文献类型：

作者：

M. Tashiro;K. Abe;L. Angelini;S. Barthelmy;N. Gehrels;N. Ishikawa;L. Kaluzienski;N. Kawai;R. Kelley;K. Kinugasa;H. Kodaira;T. Kohmura;K. Kubota;Y. Maeda;S. Maeno;H. Murakami;T. Murakami;Y. Nakagawa;K. Nakazawa;J. Nousek;S. Okuno;K. Onda;J. Reeves;G. Ricker;G. Sato;E. Sonoda;M. Suzuki;T. Takahashi;T. Tamagawa;K. Torii;Y. Ueda;Y. Urata;K. Yamaoka;M. Yamauchi;D. Yonetoku;A. Yoshida;S. Univ.;NasaGsfc;Aoyama Gakuin Univ.;T. Tech.;Gunma Astronomical Observatory;Kanazawa Univ.;Kogakuin Univ.;Kyoto Univ.;Jaxaisas;U. Miyazaki;Penn. State Univ.;Mit;Riken;O. Univ.

本文介绍Swift和Suzaku对GRB 060105早期X射线余辉的观测结果。GRB 060105在2006年1月5日06时49分28秒触发了雨燕暴警报望远镜（BAT）。朱雀小组在雨燕触发后19公里（5.3小时）开始了预先计划的机会观察目标。在瞬时发射和随后的非常陡的衰减之后，从T_0+187 s到T_0+1287 s观察到一个浅的衰减。在T_0 +（1.5-3）ks的观测间隙之后，在T_0+（4-30）ks观测到极早的陡峭衰减。光变曲线在T_0+30 ks处再次变平，从T_0+50 ks到观测结束又发生了一次陡峭的衰减。这两个陡峭的衰减表现出2.3 - 2.4的衰减指数。这个非常早的中断，如果它是一个喷流中断，是X射线余辉观测中最早的情况，表明一个非常窄的喷流，其开口角远低于1度。独特的朱雀/XIS数据使我们能够设置非常严格的上限线辐射或吸收在这个伽玛暴。对于所报道的z=4.0+/-1.3的伪红移，铁谱线等效宽度的上限为50 eV。

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 (BAT) at 06:49:28 on 5 January 2006. The Suzaku team commenced a pre-planned target of opportunity observation at 19 ks (5.3 hr) after the Swift trigger. Following the prompt emission and successive very steep decay, a shallow decay was observed from T_0+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+30 ks, and another steep decay followed from T_0+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 degree. 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

文献摘要

被引文献

相似文献