GRB 970508的光学后续观测
天体物理学
2009-10-30 v1
摘要
报告了GRB 970508对应体的光学后续观测结果，从事件发生后7小时开始。在最初三个连续夜晚获得了多色U、B、V、Rc和Ic波段的观测。对应体在Rc波段被定期监测直到暴后约4个月。最大值后的光变曲线遵循指数α = -1.141 ± 0.014的幂律衰减。光变曲线偏离平滑幂律衰减的程度为中等（均方根值 = 0.15星等）。我们在晚期未发现光变曲线的平坦化。光学余辉流量是GRB流量的显著部分，约~5%。光学能量分布可以用幂律很好地描述，其斜率在最大值时刻发生变化（光谱变红）。
引用
@article{arxiv.astro-ph/9802160,
title = {Optical follow-up of GRB 970508},
author = {T. J. Galama and P. J. Groot and J. van Paradijs and C. Kouveliotou and R. G. Strom and R. A. M. J. Wijers and N. Tanvir and J. Bloom and M. Centurion and J. Telting and R. G. M. Rutten and P. Smith and C. Mackey and S. Smartt and C. Benn and J. Heise and J. in 't Zand},
journal= {arXiv preprint arXiv:astro-ph/9802160},
year = {2009}
}
备注
Accepted for publication in the Astrophysical Journal Letters, 10 pages including 3 figures