Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.3198w&link_type=abstract
Journal of Geophysical Research, vol. 81, July 1, 1976, p. 3198-3206.
Astronomy and Astrophysics
Astronomy
4
Cosmic Rays, Diffusion Coefficient, Interplanetary Magnetic Fields, Long Term Effects, Particle Diffusion, Astronomical Models, Magnetic Rigidity, Magnetic Variations, Modulation, Power Spectra, Solar Activity Effects
Scientific paper
A nonseparable model of the interplanetary diffusion coefficient is presented which provides a simultaneous explanation for the available observations of cosmic ray electrons and nuclei of galactic origin measured around the last solar maximum. Changes in the energy spectra of cosmic ray electrons, protons, and alpha particles above roughly 50 MeV/nucleon are theoretically reproduced by numerical solutions of the steady-state transport equation for cosmic rays in the solar system. Changes in the diffusion coefficient are introduced by smooth variations of four independent parameters. It is shown that this model matches also the observed power spectra of the interplanetary magnetic field fluctuations reasonably well.
Bedijn P. J.
Winkler C. N.
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