Cosmic Rays

Basic Properties

• What are cosmic rays?
  • solar energetic particles
  • Galactic
  • extragalactic
• in real time: data from ACE
• spectra: ions, electrons
• composition
• acceleration site--supernova remnants: SN1006, E0102-72
• propagation: cosmic-ray electrons in the Milk Way: radio continuum sky; in other galaxies: radio halos in NGC5775 and NGC 253 radio vs optical
• experiments:
  • balloon-borne: JACEE, CREAM, CAPRICE-2
  • space-based: Ulysses, ACE ATIC, Pamela, Fermi
  • ground-based (atm Cerenkov): H.E.S.S., VERITAS
  • ground-based (air shower): AGASA, HiRes, Auger