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Titel |
ULYSSES observations of energetic particle acceleration and the superposed CME and CIR events of November 1992 |
VerfasserIn |
T. L. Lim, J. J. Quenby, M. K. Reuss, E. Keppler, H. Kunow, B. Heber, R. J. Forsyth |
Medientyp |
Artikel
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Sprache |
Englisch
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ISSN |
0992-7689
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Digitales Dokument |
URL |
Erschienen |
In: Annales Geophysicae ; 14, no. 4 ; Nr. 14, no. 4, S.400-410 |
Datensatznummer |
250012256
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Publikation (Nr.) |
copernicus.org/angeo-14-400-1996.pdf |
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Zusammenfassung |
During November 1992, a series of forward and
reverse shocks passed the ULYSSES spacecraft. Spectral and anisotropy
measurements are reported for protons and alpha particles between 0.28 and 6 MeV
observed by the Energetic Particle Composition Experiment, data recorded by the
Magnetometer Experiment and the high-energy (2.7–300 MeV) proton data from the
Kiel Electron Telescope. An analysis of energetic particle, plasma and
magnetometer data from ULYSSES has allowed a unique study of the corresponding
arrival of fare particles, particles within a corotating interaction region and
particles transported with a coronal mass ejection. We present an analysis of
these data in terms of possible diffusive shock acceleration but conclude that
this is likely to be incompatible with the short transit time of the particles.
Shock drift acceleration of particles with energies 0.3 MeV/nucleon or solar
acceleration followed by particle trapping behind the shock front are
alternative possibilities. |
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