Light Curves and Statistical Samples of QSO-Galaxy Gravitational Lens Systems

AST 98-02802 Edwin Turner 特纳博士正在进行三项研究：（1）继续使用APO 3.5 m对候选和已知透镜系统进行光度监测;（2）对斯隆数字巡天（SDSS）数据中确定的新候选透镜系统进行后续观测;（3）进行相关的理论研究。 引力透镜是研究宇宙学和天体物理学基本问题的有力工具。 特纳博士正在使用阿帕奇点天文台（APO）3.5米望远镜继续对候选和已知的引力透镜系统进行光度监测。 光变曲线被用来测量宇宙的膨胀率，测试有争议的系统的透镜假设，并检测微透镜事件与暗物质的性质和类星体的非常小尺度的空间结构的基本影响。 特纳博士正在组装一个控制良好的统计样本，其中可能包含数百个透镜系统。 ***

AST 98-02802 Edwin Turner Dr. Turner is pursuing three investigations: (1) to continue ongoing photometric monitoring of candidate and known lens systems using the APO 3.5m; (2) to make follow-up observations of new candidates lens systems identified in the Sloan Digital Sky Survey (SDSS) data; (3) to conduct related theoretical investigations. Gravitational lensing is a powerful tool for studying fundamental problems in cosmology and astrophysics. Dr. Turner is using the Apache Point Observatory (APO) 3.5m telescope to continue photometric monitoring of candidate and known gravitational lens systems. The light curves are used to measure the expansion rate of the universe, to test the lens hypothesis for controversial systems and to detect microlensing events with fundamental implications for the nature of dark matter and the very small scale spatial structure of quasars. Dr. Turner is assembling a well controlled statistical sample containing perhaps hundreds of lens systems. ***