October 1972 solar event - The third dimension in solar particle propagation

Details October 1972 solar event - The third dimension in solar particle propagation October 1972 solar event - The third dimension in solar particle propagation

Jan 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81...43d&link_type=abstract

Journal of Geophysical Research, vol. 81, Jan. 1, 1976, p. 43-50.

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Heos B Satellite, Interplanetary Magnetic Fields, Particle Flux Density, Solar Corpuscular Radiation, Solar Wind, Anisotropic Media, Interplanetary Medium, Lines Of Force, Time Response

Scientific paper

Measurements of particle fluxes and anisotropies made by Heos 2 at crossings of an apparent boundary in interplanetary space are discussed which illustrate how MeV protons and electrons are constrained to move along magnetic-field lines rather than across them. The measurements indicated that the cited boundary separated two particle regimes and was roughly parallel to the plane of the ecliptic. Based on these observations, it is suggested that the solar wind blows snake-like three-dimensional tubes into interplanetary space and that adjacent tubes compress each other to produce local constrictions. MeV particles would follow the magnetic-field-line bundles contained within such tubes and would experience great difficulty in crossing from the regime in one tube to that in a neighboring tube. It is concluded that the theta coordinate of magnetic-field and solar-wind velocity vectors should be given at least as much attention as the phi coordinate when the development of solar particle events is studied.

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