Low-energy particle events associated with sector boundaries |
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Authors: | Z. Švestka L. Fritzová-Švestková J. T. Nolte H. W. Dodson-Prince E. R. Hedeman |
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Affiliation: | (1) American Science and Engineering, Inc., Cambridge, Mass., U.S.A.;(2) McMath Hulbert Observatory, The University of Michigan, Pontiac, Mich., U.S.A. |
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Abstract: | Onsets of some 40 to 45 low-energy proton events during the years 1957–1969 coincided in time with transits of well-defined sector boundaries across the Earth. These events can be interpreted as long-lived proton streams filling up some of the magnetic sectors, indicating an acceleration of protons which is not associated with typical proton-producing flares. The sharp onsets of these particle streams, as well as a deficiency of flare-associated particle events shortly before the boundary transit, indicate that in some cases magnetic sector boundaries can inhibit transverse propagation of low-energy particles in the solar corona or in interplanetary space. |
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