Physics
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2079l&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 19, p. 2079-2082
Physics
15
Electrons, Magnetospheres, Relativistic Particles, Solar Flares, Solar X-Rays, Electron Decay Rate, Magnetic Fields, Satellite-Borne Instruments, Shock Waves, Telemetry
Scientific paper
Data from the Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) spacecraft has shown the presence near L = 1.9 of the remnants of the ultrarelativistic electrons (above 15 MeV) injected into the magnetosphere on 24 March 1991. The decay of the electrons has been tracked since July 1992. The electron e-folding lifetime is in the range of six to twelve months, and the location in L of the peak intensity moved inward by approximately 0.05 units in one year. The inferred electron lifetime is similar to that of approximately 0.5 MeV electrons, which is in agreement with extrapolation to higher energies of the theoretical estimates of Lyons and Thorne (1972).
Baker Daniel N.
Bernard Blake J.
Cummings Jay R.
Looper Mark Dixon
Mewaldt Richard A.
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