Physics
Scientific paper
Feb 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..23..581g&link_type=abstract
Advances in Space Research, Vol. 23, No. 3, p. 581 - 590
Physics
6
Heliosphere: Particle Acceleration
Scientific paper
The transport and acceleration of energetic nuclei associated with corotating interaction regions is discussed with emphasis on its importance relative to global heliospheric phenomena such as anomalous cosmic rays, the distant heliosphere, and propagation to high latitudes. The author discusses aspects of particle acceleration at the forward and reverse shocks bounding CIRs which support the idea that accelerated pickup ions are important contributors to energetic ions in the heliosphere. He outlines the current understanding of the source of CIR-associated energetic nuclei based on multi-spacecraft observations of the spatial variation of low-energy cosmic rays, as well as that of freshly ionized pickup ions. The author also discusses the propagation of CIR-associated energetic particles to high heliographic latitudes. He presents a model of the interplanetary magnetic field and shows results from a numerical simulation which suggest that particles undergo significant latitudinal diffusion.
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