Focused transport of energetic particles along magnetic field lines draped around a coronal mass ejection

Details Focused transport of energetic particles along magnetic field lines draped around a coronal mass ejection Focused transport of energetic particles along magnetic field lines draped around a coronal mass ejection

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.1597t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, Feb. 1, 1992, p. 1597-1607.

Physics

9

Coronal Loops, Energetic Particles, Particle Trajectories, Solar Wind, Stellar Mass Ejection, Fokker-Planck Equation, Interplanetary Magnetic Fields, Magnetoplasmadynamics

Scientific paper

Evidence is presented for focused transport of energetic particles along magnetic field lines draped around a coronal mass ejection. This evidence was obtained with the University of Maryland/Max-Planck-Institute experiment on the ISEE-3 spacecraft during the decay phase of the June 6, 1979, solar particle event. During the early portion of the decay phase of this event, interplanetary magnetic field lines were apparently draped around a coronal mass ejection, leading to a small focusing length on the western flank where ISEE 3 was located. A period of very slow decrease of particle intensity was observed, along with large sunward anisotropy in the solar wind frame, which is inconsistent with predictions of the standard Fokker-Planck equation models for diffusive transport. It was found possible to fit the observations, assuming that focused transport dominates and that the particle pitch angle scattering is isotropic.

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