| Speaker: | Maximo Pernas (KIT) |
|---|---|
| Title: | Ultra High Energy Cosmic Rays: latest results from the Pierre Auger Observatory |
| Date (JST): | Tue, Jul 26, 2011, 16:00 - 17:00 |
| Place: | Seminar Room at IPMU Kamioka Satellite |
| Abstract: | The origin of ultra-high energy cosmic rays (UHECR, with energies beyond 10$^{18}$ eV) still remains a mystery. Experimental results suggest that the UHECR flux is composed predominantly of hadronic primary particles. As charged particles, they suffer deflections in cosmic magnetic fields and do not point back directly to their sources. An indirect search for their origin is necessary instead: the precise measurement of the energy spectrum, an estimation of the mass composition and its evolution with energy, and angular anisotropies are the three main handles on disentangling this almost century-old problem. The Pierre Auger Observatory has reported in recent years measurements in these three categories. These results will be presented and discussed." |
