Energetic particle observations at the Helios 1 spacecraft of shocks associated with coronal mass ejections
- NASA Goddard Space Flight Center, Greenbelt, MD (United States)
Using energetic particle data from the Helios 1 spacecraft, the authors have studied the particles associated with 26 coronal mass ejection (CME)/shock pairs. The authors divided the particle events into four classes on the basis of the relative intensities of their prompt and shock-associated components. Events in group 1 have stong 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. This study supports their previous work in which solar energetic particle events were discussed in terms of a solar component and an interplanetary shock component and where the shock effects depend on the connection longitude of the observer.
- OSTI ID:
- 5104695
- Journal Information:
- Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 95:A5; ISSN 0148-0227; ISSN JGREA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Associations between coronal mass ejections and interplanetary shocks
Coronal mass-ejection events
Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
ATMOSPHERES
DATA ANALYSIS
INTERPLANETARY SPACE
MASS TRANSFER
ORIGIN
RADIATIONS
SHOCK WAVES
SOLAR ACTIVITY
SOLAR ATMOSPHERE
SOLAR CORONA
SOLAR FLARES
SOLAR PARTICLES
SOLAR RADIATION
SPACE
SPACE VEHICLES
STELLAR ATMOSPHERES
STELLAR CORONAE
STELLAR RADIATION
VEHICLES