Events at Physics |
Events on Monday, April 27th, 2009
- Plasma Physics (Physics/ECE/NE 922) Seminar
- Particle Acceleration and Magnetic Field Amplification in Collsionless Shocks
- Time: 12:05 pm
- Place: 3345 Engineering Hall
- Speaker: Brian Reville, Max-Planck Intsitut fuer Plasmaphysik, Garching, Germany
- Special Astronomy Colloquium
- Cosmic Rays emission from active and non-active Galaxies
- Time: 3:30 pm - 5:00 pm
- Place: 4534 Sterling Hall
- Speaker: Dr. Julia Becker, Physics Institute, Gothenberg University Sweden
- Abstract: High-energy Cosmic Rays hit the Earth's atmosphere every day, with
energies of 1e9 up to more than 1e20 eV per particle. Still after almost 100 years of their discovery, the exact origin is still unknown as magnetic fields scramble the direction of Cosmic Rays. In this talk, Cosmic Ray acceleration sites in starburst and active galaxies are discussed. In addition, estimates of the high-energy photon and neutrino fluxes arising from Cosmic Ray interactions in the sources are presented. These neutral particles lead right to their production sites and can therefore be used to identify the sources of high-energy Cosmic Rays. - Host: Professor John S Gallagher