银河黄斑方向引力透镜光学深度
天体物理学
2007-05-23 v1
摘要
我们呈现对OLGE（OGLE）在银河黄斑方向进行引力透镜搜索的前两年分析结果。我们检测到9个透镜事件，基于约项约颗恒星的算法搜索。其特征时间尺度范围为天，其中。幅度分布与理论预期一致。星系似乎从观察到的整体黄斑恒星分布中随机抽取。我们发现引力透镜的光学深度大于，显著高于当前理论估计的值。
引用
@article{arxiv.astro-ph/9407014,
title = {The Optical Depth to Gravitational Microlensing in the Direction of the Galactic Bulge},
author = {A. Udalski and M. Szymanski and K. Z. Stanek and J. Kaluzny and M. Kubiak and M. Mateo and W. Krzeminski and B. Paczynski and R. Venkat},
journal= {arXiv preprint arXiv:astro-ph/9407014},
year = {2007}
}
备注
19 pages, uses AAS LaTeX aaspp.sty macro. Full paper as appears in Acta Astronomica 44, 165 (12 figures, 3 tables) in gziped Postscript form (430kB) is available via anonymous ftp from sirius.astrouw.edu.pl (148.81.8.1) directory /ogle as paper_eff.ps.gz