Lecture 38

Cosmic Rays

Basic Properties

• What are cosmic rays?
  • solar energetic particles
  • Galactic
  • extragalactic
• in real time: data from ACE
• spectra: all-particle
• composition
• energetics
• experiments:
  • balloon-borne: JACEE, CREAM, CAPRICE-2
  • space-based: Ulysses, ACE
  • ground-based (atm Cerenkov): H.E.S.S., VERITAS
  • ground-based (air shower): AGASA, HiRes, Auger

Propagation

• physical processes
• leaky box model