September 25, 1997 CfA Colloquium


Title: Gravitational Lenses and the Age of the Universe

Speaker: Ed Turner, Princeton

Abstract: Determinations of the time delay and geometry in individual gravitational lens systems plus the observed frequency of lensing events combine to give a powerful and uniquely direct measure of the age of the universe.

Reference for students: Click here for recommended paper abstract.

Copies of the paper can be obtained from Jean Collins.