Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987afz....26..285f&link_type=abstract
(Astrofizika, vol. 26, Mar.-Apr. 1987, p. 285-299) Astrophysics (ISSN 0571-7132), vol. 26, no. 2, Sept. 1987, p. 175-184. Transl
Astronomy and Astrophysics
Astrophysics
1
Diffusion Coefficient, Galactic Cosmic Rays, Interstellar Matter, Relativistic Particles, Turbulence, Anisotropic Media, Isotropic Turbulence, Magnetohydrodynamic Waves, Power Spectra, Scattering
Scientific paper
Pitch-angle scattering of relativistic particles by Alfven wave turbulence is considered. It is shown that for any anisotropy of the wave distribution the transport coefficient of the pitch-angle scattering is an even function of the cosine of the pitch angle. In the case of turbulence with a power-law spectrum, two types of anisotropy of the turbulence are considered: one-dimensional and isotropic. Comparison of the theory with observational data on the diffusion coefficient of galactic cosmic rays makes it possible to estimate the parameters of the Alfven wave turbulence.
Fedorenko V. N.
Ostriakov V. M.
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