Sloan 数字天文台对 GRB010222 的多颜色观测
天体物理学
2009-11-06 v2
摘要
宣布在暴烈后 4.4 小时检测到 GRB010222（BeppoSAX 检测；Piro 2001）的光学对应物。Sloan 数字天文台的 0.5m 光度望远镜（PT）和 2.5m 调查望远镜用于在暴烈后 4.8 小时观测 GRB010222 的余辉。0.5m PT 以 300 秒 g' 带 5 次曝光持续半小时，测量该短期内的时间衰减率为 F_nu \propto t^{-1.0+/-0.5}。2.5m 相机在 5 个滤镜（u' g' r' i' z'）中几乎同时成像，r' = 18.74+/-0.02于 12:10 UT。经过校正 reddening 和余辉的时间衰减后，这些多颜色观测与幂律 F_nu \propto nu^{-0.90+/-0.03} 良好吻合，唯一例外是 u' 带 UV 通量低于该斜率约 20%。我们检讨了这种光谱形状的可能解释，包括来自活跃星系形成区域的源消光。
关键词
引用
@article{arxiv.astro-ph/0104201,
title = {Sloan Digital Sky Survey Multicolor Observations of GRB010222},
author = {Brian C. Lee and Douglas L. Tucker and Daniel E. Vanden Berk and Brian Yanny and Daniel E. Reichart and Jennifer Adelman and Bing Chen and Mike Harvanek and Arne Henden and Zeljko Ivezic and Scot Kleinman and Don Lamb and Dan Long and Russet McMillan and Peter R. Newman and Atsuko Nitta and Povilas Palunas and Donald Schneider and Steph Snedden and Don York and John W. Briggs and J. Brinkmann and Istvan Csabai and Greg S. Hennessy and Stephen Kent and Robert Lupton and Heidi Jo Newberg and Chris Stoughton},
journal= {arXiv preprint arXiv:astro-ph/0104201},
year = {2009}
}
备注
8 pages, 4 figures, accepted for publication in ApJ. Two figures added, minor changes to text in this draft. Related material can be found at: http://sdss.fnal.gov:8000/grb/