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Published 1985 | Published
Book Section - Chapter Open

Changes in the Energy Spectrum of Anomalous Oxygen and Helium During 1977-1985


We have used data from the cosmic-ray experiment on the Voyager spacecraft to measure the energy spectrum of anomalous O and He during the period 1977 to 1985. We find that these spectra change dramatically after the middle of 1980, with the peak or plateau region of the differential spectrum shifting to a higher energy. This change appears to be related to the reversal of the solar magnetic field and could imply that particle drifts are important to the acceleration or propagation of these particles.

Additional Information

© NASA/STI. Provided by the NASA Astrophysics Data System. We are grateful toR. E. Vogt and other CRS team members at the California Institute of Technology, the Goddard Space Flight Center, the University of Arizona, and the University of New Hampshire. This work was supported in part by NASA under contract NAS 7-918 and grant NGR 05-002-160.

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