SPACE AND COSMIC RAY PHYSICS SEMINAR

University of Maryland
Atlantic Building, Room 2400
4:30 PM Monday, April 23, 2007
Coffee, Tea & Snacks 4:15-4:30 PM

Vladimir Ptuskin
IZMIRAN

Cosmic Ray Origin in SNR Shocks and Transport in the Galaxy

Most cosmic rays in the Galaxy are thought to be accelerated by the shocks of supernova explosions. We discuss the acceleration of galactic cosmic rays in supernova remnants in a general context of the problem of cosmic-ray origin. The model of cosmic ray propagation in the Galaxy, the nature of the "knee" in the cosmic ray spectrum, and the origin of the highest energy events in cosmic rays are discussed.