Seed population for about 1 MeV per nucleon heavy ions accelerated by interplanetary shocks

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167931· OSTI ID:5020706

Tan, L C; Mason, G M; Klecker, B; Hovestadt, D ^[1]

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1. Maryland Univ., College Park (USA) Max-Planck-Institut fuer Physik und Astrophysik, Garching (Germany, F.R.)

Data obtained between 1977 and 1982 by the ISEE 1 and ISEE 3 satellites on the composition of heavy ions of about 1 MeV per nucleon, accelerated in interplanetary shock events which followed solar flare events, are examined. It was found that the average relative abundances for C, O, and Fe in the shock events were very close to those found for energetic ions in the solar flares, suggesting that, at these energies, the shock accelerated particles have the solar energetic particles as their seed population. This hypothesis is supported by the fact that the Fe/O ratio in the solar particle events is very strongly correlated with the Fe/O ratio in associated diffusive shock events. 48 refs.

• OSTI ID: 5020706
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 345; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ACCELERATION
BARYONS
CHARGED PARTICLES
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HADRONS
HEAVY IONS
INTERPLANETARY SPACE
IONS
IRON
METALS
NONMETALS
NUCLEONS
OXYGEN
SATELLITES
SHOCK WAVES
SOLAR ACTIVITY
SOLAR FLARES
SOLAR WIND
SPACE
TRANSITION ELEMENTS