Propagation of solar-flare cosmic rays along corotating interplanetary flux-tubes

Details Propagation of solar-flare cosmic rays along corotating interplanetary flux-tubes Propagation of solar-flare cosmic rays along corotating interplanetary flux-tubes

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...43..475n&link_type=abstract

Solar Physics, vol. 43, Aug. 1975, p. 475-511.

Physics

7

Electromagnetic Wave Transmission, Interplanetary Magnetic Fields, Lines Of Force, Solar Cosmic Rays, Solar Flares, Astronomical Models, Boundary Conditions, Boundary Value Problems, Diffusion Coefficient, Interplanetary Space, Magnetic Flux, Radiant Flux Density, Rotating Plasmas, Solar Flux

Scientific paper

The propagation of solar-flare cosmic rays along a corotating spiral mean interplanetary magnetic flux-tube is investigated under a variety of initial, inner and outer boundary conditions, by solving the transport equations numerically. The inner boundary condition is shown to have negligible effects on the redistribution of the cosmic rays in interplanetary space, apart from a proportionality constant. The diffusion coefficients have been classified into type I and type II: for type I the peak-along-spiral stays at a finite heliocentric distance, while for type II it travels to infinity. The time dependence of the anisotropy vector is characteristically different in each type and in the case of type I is a function of the observation point. The general propagation characteristics with a free-escape outer boundary are like those of type I. It is shown that closely exponential decay can be produced without a free-escape boundary.

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