| Speaker | Ubi Wichoski |
|---|---|
| Date | Wednesday, February 13, 2002, 8:30 PM |
| Location | Room 104, Pavillon René JA Lévesque |
Abstract
The spectrum of comic rays observed at Earth spans amazingly over 11 decades of energy. Although a wealth of data has been gathered during almost 100 years, there are still many unanswered questions about their origin, acceleration mechanism, and propagation. I will discuss these issues and talk about an even more intriguing set of questions that has been posed by the observation of the ultra high energy events.
