Lecture 39

Cosmic Ray Propagation

• physical processes
• leaky box model

Cosmic Ray Acceleration

• diffusive shock acceleration
  simulated (thanks to Matthew Baring)
• SN 1006: X-ray synchrotron from TeV electrons

The Origin of Cosmic Rays

• energetic constraints

Lithium, Beryllium, and Boron: Cosmic-Ray Fossils

• ⁶LiBeB: orphans of nucleosynthesis
• Hint: cosmic-ray vs solar abundances
• cosmic ray LiBeB production
  • spallation
  • fusion
• solar LiBeB explained