长期GRB 001007的亮光学后glow
天体物理学
2007-05-23 v4
摘要
我们报告对GRB 001007在事件发生后6.14小时至约468天期间的光学跟踪观测结果。观测到一种异常亮的光学后glow (OA)，其衰减遵循指数为alpha = -2.03 +/- 0.11的陡峭幂律，可能表明光线曲线在t - t0 < 3.5天处存在突破，类似于其他爆炸中所发现的现象。LOTIS警报系统在γ射线事件发生6.14小时后所施加的上限为该光学光线曲线提供了暂且(1.2 sigma)的突破证据。OA的光谱指数beta为-1.24 +/- 0.57。这些数值可由几种火球喷流模型和炮弹模型解释。火球球对扩张模型不受青睐。深度成像揭示了主机星系系统的复杂性，至少包含两个位于后glow位置1.2秒(1.7 sigma)和1.9秒(2.7 sigma)的天体。
关键词
引用
@article{arxiv.astro-ph/0110049,
title = {The bright optical afterglow of the long GRB 001007},
author = {J. M. Castro Cerón and A. J. Castro-Tirado and J. Gorosabel and J. Hjorth and J. U. Fynbo and B. L. Jensen and H. Pedersen and M. I. Andersen and M. López-Corredoira and O. Suárez and Y. Grosdidier and J. Casares and D. Pérez-Ramírez and B. Milvang-Jensen and G. Mallén-Ornelas and A. Fruchter and J. Greiner and E. Pian and P. M. Vreeswijk and S. D. Barthelmy and T. Cline and F. Frontera and L. Kaper and S. Klose and C. Kouveliotou and D. H. Hartmann and K. Hurley and N. Masetti and E. Mazets and E. Palazzi and H. S. Park and E. Rol and I. Salamanca and N. Tanvir and J. I. Trombka and R. A. M. J. Wijers and G. G. Williams and E. van den Heuvel},
journal= {arXiv preprint arXiv:astro-ph/0110049},
year = {2007}
}
备注
7 pages, 5 figures, published in A&A