Energetic particle observations at the HELIOS 1 spacecraft of shocks associated with coronal mass ejections

Details Energetic particle observations at the HELIOS 1 spacecraft of shocks associated with coronal mass ejections Energetic particle observations at the HELIOS 1 spacecraft of shocks associated with coronal mass ejections

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.6575c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, May 1, 1990, p. 6575-6579.

Physics

20

Energetic Particles, Helios 1, Heliosphere, Shock Wave Interaction, Solar Corona, Solar Wind, Stellar Mass Ejection, Flux (Rate), Particle Acceleration, Solar Cosmic Rays, Solar Flares, Western Hemisphere

Scientific paper

Energetic particle data from the Helios 1 spacecraft have been used to study the particles associated with 26 coronal mass ejection (CME)/shock pairs. The particle events are divided into four classes on the basis of the relative intensities of their prompt and shock-associated components. Events in group 1 have strong prompt and shock components and are associated with energetic CMEs originating, most commonly, with central meridian flares. Group 2 events characteristically have strong prompt components and weaker shock components and are associated with western hemisphere (i.e., favorably located) flares. Group 3 consists of events with absent prompt components and strong shock components; the CMEs probably originate in disappearing filament events near central meridian. Group 4 events show no particle enhancements and are associated with slow CMEs and slow shocks.

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