Observation of the Near Plasma Sheet, Ring Current, and Energetic Electrons from Radiation Belts at a Geosynchronous Orbit, March 11-25, 1992

Details Observation of the Near Plasma Sheet, Ring Current, and Energetic Electrons from Radiation Belts at a Geosynchronous Orbit, March 11-25, 1992 Observation of the Near Plasma Sheet, Ring Current, and Energetic Electrons from Radiation Belts at a Geosynchronous Orbit, March 11-25, 1992

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cosre..39..236v&link_type=abstract

Cosmic Research, v. 39, Issue 3, p. 236-245 (2001).

Computer Science

Scientific paper

The dynamics of near plasma sheet electrons and ions (E~ 0.1-12.4 keV), ring current protons (E_i~ 41-133 keV), and energetic electrons from the Earth's radiation belts (E_e~ 97-1010 keV) is considered using the data from the Gorizont-34and Gorizont-35geosynchronous satellites from March 11-25, 1992. Peculiarities of this period are a long (more than 4 days) interval of the northward interplanetary magnetic field (B_z> 0) and a high-speed stream of the solar wind with an enhanced particle density. The SC and compression of the magnetosphere to the geosynchronous orbit (GMC) preceded this interval. Under quiet and moderately disturbed geomagnetic conditions and under a prolonged northward interplanetary magnetic field, we observed a significant decrease of fluxes and softening of spectra of the electron component of plasma in the energy ranges of 0.1-12.4 keV and 97-1010 keV, and of the ion component of plasma at energies of 0.1-4 keV, while the intensity of 5-12.4 keV ion fluxes increases by about one order of magnitude. The peculiarities of distributions of energetic particle fluxes observed in the period under consideration can be associated with significant variations of the convection conditions and a decreased or fully suppressed injection of energetic electrons into the geosynchronous orbit region.

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