Cosmic-ray propagation in the Galaxy: collective effects.
Abstract
It is pointed out that most cosmic rays in the energy range from 0.1 to 1000 GeV are believed to be created in our Galaxy and to escape from it after a few million years. Cosmic rays are basically a very hot collisionless plasma. Questions regarding the resonant scattering of the rays by static magnetic fields are investigated along with problems concerning a diffusion through interstellar space, the energy loss by cosmic rays, and the self-confinement of cosmic rays in the Galaxy. The validity of approximations and physical assumptions is explored and details of cosmic-ray propagation are examined. Effects of cosmic rays on galactic gasdynamics are also studied.
- Publication:
-
Annual Review of Astronomy and Astrophysics
- Pub Date:
- 1974
- DOI:
- 10.1146/annurev.aa.12.090174.000443
- Bibcode:
- 1974ARA&A..12...71W
- Keywords:
-
- Cosmic Plasma;
- Cosmic Rays;
- Galactic Radiation;
- Interstellar Gas;
- Magnetohydrodynamic Waves;
- Propagation Modes;
- Collisionless Plasmas;
- Energy Dissipation;
- Gas Dynamics;
- Milky Way Galaxy;
- Scatter Propagation;
- Wave Propagation;
- Space Radiation