Giant Luminous Arcs as Gravitational Mirages

Dr. Vah√© Petrosian
Stanford University

Darwin 103
3:00 PM

Dr. Vah√© Petrosian of Stanford University will describe the discovery of giant luminous arcs and clusters of galaxies and the subsequent studies which show clearly for the first time that they are indeed mirages, images of distant galaxies gravitationally stretched into perfect circular arcs. [Available on VHS in the SSU library.]