Precision Photometry of Quadruply-Imaged Gravitationally Lensed Quasars: Time Delays and Cosmological Parameters

Schechter，Paul AST 96-16866 谢克特博士将在一个由三部分组成的项目中继续他对引力透镜的研究。 首先是继续侦察已知的和新的四重透镜系统。 二是对PG 1115 +080进行密集监测，这是一个重力透镜，已经测量了它的多个时间延迟。 第三是开发算法和减少方法，以减少测量的不确定性，尽可能接近光子极限。

Schechter, Paul AST 96-16866 Dr. Schechter will continue his study of gravitational lenses in a three-part program. The first is to continue the reconnaissance of known and new quadruple lens systems. The second is to conduct intensive monitoring of PG1115+080, a gravitational lens for which multiple time delays have been measured. The third is to develop algorithms and reduction methods to reduce the uncertainty of the measurements as close as possible to the photon limit.