Energetic (greater than 0.2 MeV) electron bursts observed by ISEE 3 in the deep (less than 240 R(E)) geomagnetic tail

Details Energetic (greater than 0.2 MeV) electron bursts observed by ISEE 3 in the deep (less than 240 R(E)) geomagnetic tail Energetic (greater than 0.2 MeV) electron bursts observed by ISEE 3 in the deep (less than 240 R(E)) geomagnetic tail

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9813441r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A8, p. 13,441-13,451.

Physics

4

Electron Energy, Energetic Particles, Flux (Rate), Geomagnetic Tail, Magnetic Field Configurations, Magnetic Flux, Magnetohydrodynamic Flow

Scientific paper

The study reports the detection by the Goddard Space Flight Center medium energy cosmic ray experiment of bursts of 0.2-2.0-MeV electrons with durations of less than 1 hr during the ISEE 3 geotail mission in October 1982 to November 1983. Bursts are observed in all tail regions, with the majority (about 60 percent) associated with encounters with the plasma sheet, about 20 percent occurring in the tail lobes and a similar number in the magnetosheath. The electron burst intensity and occurrence rate fall abruptly by around an order of magnitude at about 80-90 R(E) downtail. The majority (about 64 percent) of plasma sheet electron bursts are associated with northward B(z). Plasma sheet electron bursts associated with southward B(z) are rare (6 percent of all plasma sheet events). It is suggested that temporal variations in the electron intensity associated with substorms may be present, in addition to spatial variations reflecting the average quiet-time tail configuration.

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