GRB060418 和 GRB060607A 的余辉起始
天体物理学
2012-11-13 v1
摘要
伽马射线暴被认为是由高度相对论性外流产生的。尽管已有外流初始 Lorentz 因子 的上限和下限，但直接测定 的观测努力迄今尚未成功或提供了模糊的结果。事实上，早期余辉光变曲线的形状对 高度敏感， 决定了余辉峰值的时间，即外流与受激环暴物质拥有相当能量之时。我们现评论由 REM 机器人望远镜对 GRB 060418 和 GRB 060607A 的近红外余辉进行的早期观测。对于这两个事件，余辉峰值被单独识别出来，使我们能够确定初始火球 Lorentz 因子 。
引用
@article{arxiv.0710.0727,
title = {The afterglow onset for GRB060418 and GRB060607A},
author = {S. Covino and S. D. Vergani and D. Malesani and E. Molinari and P. D'Avanzo and G. Chincarini and F. M. Zerbi and L. A. Antonelli and P. Conconi and V. Testa and G. Tosti and F. Vitali and F. D'Alessio and G. Malaspina and L. Nicastro and E. Palazzi and D. Guetta and S. Campana and P. Goldoni and N. Masetti and E. J. A. Meurs and A. Monfardini and L. Norci and E. Pian and S. Piranomonte and D. Rizzuto and M. Stefanon and L. Stella and G. Tagliaferri and P. A. Ward and G. Ihle and L. Gonzalez and A. Pizarro and P. Sinclair and J. Valenzuela},
journal= {arXiv preprint arXiv:0710.0727},
year = {2012}
}
备注
This contribution is part of the proceedings of the Frascati Workshop 2007, edited by F. Giovannelli and L. Sabau-Graziati, published in a special volume of the Chinese Journal of Astronomy and Astrophysics (ChJAA)