一次 HETE-2 观测的光学暗 GRB：GRB 051022
天体物理学
2015-06-24 v3
摘要
GRB 051022 于 2005 年 10 月 22 日 13:07:58 被 HETE-2 检测到。该 GRB 的位置由飞行定位系统立即确定。该暴露包含多个脉冲，持续时间约为 190 秒。候选 X 射线和射电 afterglow 的检测报告了，而未发现光学 afterglow。对宿主星系的光学光谱观测揭示了红移 z = 0.8。利用 HETE-2 对初始暴露数据，我们发现 N_H = 8.8 -2.9/+3.1 x 10^22 cm^-2 and the visual extinction A_V = 49 -16/+17 mag in the host galaxy。如果是这种情况，未发现任何光学瞬态的检测是合理的。HETE-2 对初始暴露观测得到的吸收值与 Swift XRT 对 afterglow 的观测结果完全一致。我们的分析暗示吸收介质可能位于 R ~ 10^16 cm 处的外部冲击外部，这可能是一个带尘埃的分子云。
引用
@article{arxiv.astro-ph/0605407,
title = {An Optically Dark GRB Observed by HETE-2: GRB 051022},
author = {Yujin E. Nakagawa and Atsumasa Yoshida and Satoshi Sugita and Kaoru Tanaka and Nobuyuki Ishikawa and Toru Tamagawa and Motoko Suzuki and Yuji Shirasaki and Nobuyuki Kawai and Masaru Matsuoka and Jean-Luc Atteia and Alexandre Pelangeon and Roland Vanderspek and Geoff B. Crew and Joel S. Villasenor and Nat Butler and John Doty and George R. Ricker and Graziella Pizzichini and Timothy Q. Donaghy and Donald Q. Lamb and Carlo Graziani and Rie Sato and Miki Maetou and Makoto Arimoto and Jun'ichi Kotoku and J. Garret Jernigan and Takanori Sakamoto and Jean-Francois Olive and Michel Boer and Edward E. Fenimore and Mark Galassi and Stanford E. Woosley and Makoto Yamauchi and Kunio Takagishi and Isamu Hatsukade},
journal= {arXiv preprint arXiv:astro-ph/0605407},
year = {2015}
}
备注
6 pages, 2 figures, accepted for publication in PASJ letter