Physics
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jatp...39..699m&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 39, June 1977, p. 699-708. Bundesministerium für Forschung und Technologie
Physics
2
Daytime, Electric Fields, Electron Energy, Electron Precipitation, Magnetospheric Electron Density, Proton Precipitation, Explorer 40 Satellite, F Region, Field Aligned Currents, Isis Satellites, Plasma Density, Plasma Temperature, Satellite Observation, Thermal Plasmas
Scientific paper
Simultaneous INJUN V measurements of low-energy precipitating particles, thermal plasma density and temperature, and electric fields in the midday cusp region at altitudes above 2000 km for the period May-June, 1971, have been analyzed. It was found that the cusp region can often be divided into two regions: Region A characterized by an increase in thermal charged particle temperature and a decrease in thermal electron intensity, and Region B where electron and ion densities are increased typically by a factor of 2 over the values in Region A. Cusp Regions A and B move equatorward with increasing magnetic activity. The decreased thermal charged particle density in Region A is attributed to the presence of magnetic field aligned currents and/or electric fields parallel to the magnetic fields.
Braun H. J.
Muench J. W.
Pilkington G. R.
Sagalyn R. C.
Wildman J. L. P.
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