关于GRB 020813喷流结构与磁场配置
天体物理学
2008-11-26 v2
摘要
讨论并比较了GRB 020813的偏振曲线与喷流结构、演化及其磁化特性以及喷流冲击的星际介质模型。GRB 020813因其后glow光度曲线的光滑性，使其适用于当前模型的应用。该偏振数据集允许我们排除标准GRB喷流模型，即喷流内部在喷流开口角内能量和洛伦兹因子具有明确定义的值，磁场由冲击前端产生。我们探索了替代模型，发现具有结构喷流或具有环形磁场分量的喷流能很好地拟合偏振曲线。由于对偏振曲线的采样不完整，无法得出更有力的结论。需要更密集的采样，尤其是在早期时段，以确定喷流的结构及其磁场的几何构型。
引用
@article{arxiv.astro-ph/0401315,
title = {On the jet structure and magnetic field configuration of GRB 020813},
author = {D. Lazzati and S. Covino and J. Gorosabel and E. Rossi and G. Ghisellini and E. Rol and J. M. Castro Cerón and A. J. Castro-Tirado and M. Della Valle and S. di Serego Alighieri and A. S. Fruchter and J. P. U. Fynbo and P. Goldoni and J. Hjorth and G. L. Israel and L. Kaper and N. Kawai and E. Le Floc'h and D. Malesani and N. Masetti and P. Mazzali and F. Mirabel and P. Moller and S. Ortolani and E. Palazzi and E. Pian and J. Rhoads and G. Ricker and J. D. Salmonson and L. Stella and G. Tagliaferri and N. Tanvir and E. van den Heuvel and R. A. M. J. Wijers and F. M. Zerbi},
journal= {arXiv preprint arXiv:astro-ph/0401315},
year = {2008}
}
备注
7 pages, 5 postscript figures, minor revisions according to the referee comments. A&A in press