Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ssrv...26..157t&link_type=abstract
Space Science Reviews, vol. 26, June 1980, p. 157-213.
Astronomy and Astrophysics
Astrophysics
100
Cosmic Plasma, Cosmic Rays, Interplanetary Gas, Particle Acceleration, Plasma Turbulence, Shock Fronts, Energetic Particles, Interplanetary Space, Magnetohydrodynamic Waves, Particle Interactions, Shock Waves, Supersonic Flow, Transport Properties
Scientific paper
The theory and observational evidence pertaining to particle acceleration by shock waves in astrophysical objects and in space are systematized. Recent works showing observational and theoretical aspects of the problem dealing with shocks in turbulent media are emphasized. The acceleration of particles by shocks in turbulent media is observed in interplanetary space. This acceleration mechanism is of particular interest from the point of view of the origin of cosmic rays, providing the degree form of the spectrum. The index of the spectrum is close to the observable one for galactic cosmic rays. It depends slightly on specific conditions in the acceleration region. Electron and nucleus acceleration in supernova remnants and in radiogalaxies is discussed, and theory and observational data are compared. The theory of particle acceleration by supersonic turbulence is outlined.
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