Magnetic Mirroring as the Cause of the Unusual Cosmic Ray Event on October 22, 1989

Details Magnetic Mirroring as the Cause of the Unusual Cosmic Ray Event on October 22, 1989 Magnetic Mirroring as the Cause of the Unusual Cosmic Ray Event on October 22, 1989

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh32b..02b&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH32B-02

Physics

2104 Cosmic Rays, 2118 Energetic Particles, Solar, 2134 Interplanetary Magnetic Fields, 7514 Energetic Particles (2114)

Scientific paper

The relativistic solar proton event of October 22, 1989 displayed an extremely anisotropic spike at event onset, which merged smoothly into a more gradual, less anisotropic phase. This strange behavior has found no satisfactory explanation to date. Spurred by recent evidence that mirroring from a magnetic bottleneck can play a major role in solar particle transport, we model the October 22 event using a magnetic field geometry that includes a magnetic bottleneck downstream of Earth. Initial results show that strange behavior similar to that observed on October 22 can indeed occur when the observer is located on the order of one mean free path from the mirroring region. Supported by NSF grant ATM-0000315.

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