Physics & Astronomy Colloquium

3:30 PM, Friday, September 25, 2009
Room 155, Chem-Phys Building

Dr. Susan Gardner
Department of Physics and Astronomy
University of Kentucky

" Shedding Light on Dark Matter ''

The existence of dark matter in the cosmos is established if we assume that gravity is understood. Observational evidence demands that dark matter be stable on Gigayear time scales and that its energy fraction in the cosmos today exceed that of ordinary matter by a factor of a few. I will describe how observational and experimental studies of light after its passage through dark matter probe symmetries which can explain these observed features.

Refreshments will be served in CP 179 at 3:15 PM