Possible leakage of energetic particles from the magnetosphere into the upstream region on June 7, 1985

Details Possible leakage of energetic particles from the magnetosphere into the upstream region on June 7, 1985 Possible leakage of energetic particles from the magnetosphere into the upstream region on June 7, 1985

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9520825k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Dec. 1, 1990, p. 20825-20832. Research supported by NASA and DOE.

Physics

12

Energetic Particles, Geomagnetism, Magnetospheric Electron Density, Magnetospheric Ion Density, Solar Terrestrial Interactions, Space Plasmas, Bow Waves, Plasma Acceleration, Prognoz Satellites, Satellite Observation, Shock Waves

Scientific paper

Prognoz 10 observed a series of energetic ion (E not less than 10 KeV) and electron (E not less than 30 KeV) bursts whilst upstream of the dusk bow shock from 2000-2200 UT on June 7, 1985. The particles streamed away from the bow shock along the interplanetary magnetic field (IMF) during periods when the IMF connected the spacecraft to the bow shock/magnetosphere. Both ions and electrons were observed when the IMF connected the spacecraft to the subsolar bow shock, but only ions were observed when the IMF connected the spacecraft to the dusk bow shock. Simultaneous ground and magnetospheric observations are presented which indicate the onset of geomagnetic activity and an increase in magnetospheric energetic particle flux levels just prior to the series of particle bursts observed by Prognoz 10 upstream of the bow shock. The combined observations are consistent with a magnetospheric source for these upstream particle events.

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