Physics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9512141k&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Aug. 1, 1990, p. 12141-12148. Research supported by NSF.
Physics
3
Auroral Irradiation, Electron Energy, Kilometric Waves, Solar Radio Bursts, Velocity Distribution, Computerized Simulation, Energetic Particles, Magnetohydrodynamic Stability, Satellite Observation
Scientific paper
While, according to the cyclotron maser theory, auroral kilometric radiation generates auroral zone instability whose consequent radiation is in many respects consistent with observations, in situ velocity distribution measurements by satellites show only moderate positive gradients which would be only marginally unstable, implying a low radiation level. Numerical simulations are conducted alternatively using an observed electron-velocity distribution and an idealized loss-cone distribution. The expected amplification of X-mode radiation, as well as effects which go beyond the behavior of a simple amplifying medium, emerge in the results.
Burch James. L.
Gaffey John Dean Jr.
Kainer Selig
Krauss-Varban Dietmar
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