Tuesday, July 11, 2006, 3:30 pm — Large Seminar Room, Bldg. 510
The light rays from distant galaxies are deflected by massive structures along the line of sight, causing the galaxy images to be distorted. Measurements of these distortions, known as gravitational lensing, provide a way
of measuring the distribution of dark matter as well as the spatial geometry of the universe. I will describe the ideas underlying this approach to cosmology and how it probes dark energy. I will discuss the observational challenges ahead and recent progress in developing multiple, complementary approaches to lensing measurements.
Hosted by: Morgan May
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