Acceleration of particles by large-scale supersonic and subsonic motions of turbulent plasma

Details Acceleration of particles by large-scale supersonic and subsonic motions of turbulent plasma Acceleration of particles by large-scale supersonic and subsonic motions of turbulent plasma

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980izssr..44.2574b&link_type=abstract

(Seminar po Vzaimodeistviiu Kosmicheskikh Luchei so Sredoi, Leningrad, USSR, Nov. 30-Dec. 2, 1979.) Akademiia Nauk SSSR, Izvesti

Astronomy and Astrophysics

Astrophysics

2

Charged Particles, Particle Acceleration, Plasma Dynamics, Plasma Turbulence, Plasma-Particle Interactions, Space Plasmas, Cosmic Plasma, Interstellar Matter, Plasma-Electromagnetic Interaction, Random Processes, Relativistic Particles, Shock Fronts, Solar Wind, Supernova Remnants

Scientific paper

Observational data and theoretical considerations are reviewed which support the existence of regions of large-scale random motions of plasma in various astrophysical objects, including radio galaxies, supernova shells, and interplanetary space. In some of these objects, a supersonic turbulence, i.e., a random collection of shock and rarefaction waves, is formed. It is suggested that such conditions lead to the acceleration of fast charged particles by large-scale motions of turbulent plasma with frozen-in magnetic fields; the acceleration is found to be second-order Fermi acceleration. The transport equation for magnetized fast particles is generalized to the case of a medium in arbitrary large-scale motion. As an example, attention is given to the acceleration of relativistic electrons in shells of young supernova remnants.

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