Transition from galactic to extra-galactic cosmic rays
Abstract
In this paper we review the main features of the observed Cosmic Rays spectrum in the energy range 1017eV ÷ 1020eV. We present a theoretical model that explains the main observed features of the spectrum, namely the second Knee and Dip, and implies a transition from Galactic to Extra-Galactic cosmic rays at energy E simeq 1018 eV, with a proton dominated Extra-Galactic spectrum.
- Publication:
-
Journal of Physics Conference Series
- Pub Date:
- May 2006
- DOI:
- arXiv:
- arXiv:astro-ph/0602083
- Bibcode:
- 2006JPhCS..39..416A
- Keywords:
-
- Astrophysics
- E-Print:
- 3 pages, 2 eps figures, talk given at TAUP 2005, Zaragoza (Spain), 10-14 September 2005