Physics
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.2529r&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 94, March 1, 1989, p. 2529-2541.
Physics
45
Auroral Ionization, Cyclotron Radiation, Earth Magnetosphere, Electron Precipitation, Electron Radiation, Ampte (Satellites), Harmonic Generations, Plasma Diagnostics, Scatha Satellite
Scientific paper
Natural electron cyclotron harmonic emissions in the outer magnetosphere are often cited as the electron scattering mechanism which results in the diffuse auroral precipitation. A survey is presented of the characteristics of these waves using data from both the SCATHA and Active Magnetospheric Particle Tracer Explorers plasma wave instruments. The emissions were observed most often in the 0300-0600 LT sector at L of about 4-8 and magnetic latitudes in the range + or - 10 deg. In this region, emissions exceeding 35 micro V/m were detected only 25 percent of the time, and those exceeding 12 micro V/m were detected 60 percent of the time. In agreement with Belmont et al. (1983), these amounts are grossly insufficient to account for the diffuse auroral electron precipitation by quasi-linear pitch angle diffusion.
Koons Harry C.
Roeder James L.
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