Abstract It is shown that a non-drift, spherically-symmetric, terminal shock acceleration model gives reasonable fits to the observed anomalous oxygen spectra for 1976 and 1982 only when a compression ratio of ∼2 is used together with a moderate radial dependence for K rr. Preliminary results with an axially-symmetric, terminal shock acceleration model, including drifts, show that despite a change in polarity the accelerated spectra, at 50 AU in the equatorial plane, differ negligibly. However, the calculated modulation of anomalous oxygen at 2 AU is significantly less for a qA < 0 epoch (1987) than when qA > 0 (1976).


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    Title :

    Heliospheric terminal shock acceleration and modulation of the anomalous cosmic-ray component


    Contributors:

    Published in:

    Publication date :

    1989-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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