Jonathan F. Ormes
University of Denver
As we approach the 100th anniversary of the discovery of cosmic rays in 1912, we are getting close to solving many of the puzzles surrounding their origin. The Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope has been taking data for more than a year now, and a new picture of the gamma ray sky has emerged, leading to a more nuanced picture of the origin of galactic cosmic rays. This talk will focus on the Fermi-LAT findings related to cosmic rays and questions about their sites of origin, their acceleration, and their diffusion in the galaxy. Gamma-ray spectra are beginning to shed light on the source spectra of the underlying energetic particle populations. Results will be shown related to emission of gamma rays from the interactions of cosmic rays with interstellar gas (and dust) in the Milky Way galaxy as a whole, in supernova, and in some of the other galaxies detected by Fermi.
Friday, February 12, 2010 at 4:00 PM
Room L211, Technological Institute
Refreshments are served at 3:30 PM
