Cosmic ray propagation in a fractal galactic medium

South African Journal of Science

 
 
Field Value
 
Title Cosmic ray propagation in a fractal galactic medium
 
Creator Kermani, Hamid A. Fatemi, Jalileldin
 
Subject Astroparticle Physic; Cosmic Rays cosmic ray; diffusion; fractal; magnetic field
Description Simple cosmic ray diffusion in magnetic fields is often discussed in terms of a characteristic scattering mean free path or equivalent diffusion coefficient. This assumes very simple properties of the structure of astrophysical magnetic fields. A better approximation is to assume that the magnetic structure has fractal properties and there is then the possibility of including very short and very long interaction lengths when modelling the propagation. Results of modelling such propagation in a fractal medium are discussed. Values of the propagation parameter (α) less than 2 were obtained and confirm the plausibility of the hypothesis that supernova are the origin of galactic cosmic rays in the energy range below the knee in the spectrum.
 
Publisher AOSIS
 
Contributor —
Date 2011-01-24
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — —
Format application/pdf text/html text/xml
Identifier 10.4102/sajs.v107i1/2.275
 
Source South African Journal of Science; Vol 107, No 1/2 (2011); 4 pages 1996-7489 0038-2353
 
Language eng
 
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Coverage dray and warm — —
Rights Copyright (c) 2011 Hamid A. Kermani, Jalileldin Fatemi https://creativecommons.org/licenses/by/4.0
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