Generation of auroral kilometric radiation and the structure of auroral acceleration region

Details Generation of auroral kilometric radiation and the structure of auroral acceleration region Generation of auroral kilometric radiation and the structure of auroral acceleration region

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28..703l&link_type=abstract

Planetary and Space Science, vol. 28, July 1980, p. 703-711.

Physics

30

Auroral Electrojets, Particle Acceleration, Radio Auroras, Electron Plasma, Electron Precipitation, Ion Cyclotron Radiation, Low Frequencies, Particle Energy, Plasma Frequencies

Scientific paper

Generation of auroral kilometric radiation (AKR) in the auroral acceleration region is studied. It is shown that auroral kilometric radiation can be generated by backscattered electrons trapped in the acceleration region via a cyclotron maser process. The parallel electric field in the acceleration region is required to be distributed over 1-2 earth radii. The observed AKR frequency spectrum can be used to estimate the altitude range of the auroral acceleration region. The altitudes of the lower and upper boundaries of the acceleration region determined from the AKR data are respectively approximately 2000 and 9000 km.

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