Physics – Plasma Physics
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jgra..11204205x&link_type=abstract
Journal of Geophysical Research, Volume 112, Issue A4, CiteID A04205
Physics
Plasma Physics
2
Space Plasma Physics: Wave/Particle Interactions (2483, 6984), Space Plasma Physics: Plasma Energization, Magnetospheric Physics: Plasma Waves And Instabilities (2471), Magnetospheric Physics: Auroral Phenomena (2407)
Scientific paper
The role of electromagnetic ion cyclotron (EMIC) waves in the stimulation of auroral kilometric radiation is addressed in this study. Observations of the modulation of electron flux and energy due to EMIC/electrostatic ion cyclotron waves within the auroral kilometric radiation (AKR) source region have been reported in the past. These modulations produce in turn oscillations of the electron phase space density and therefore lead to fluctuations of AKR growth rate that may translate along the magnetic field line at the group velocity of the stimulating waves. For a model electron ``horseshoe'' distribution function, we use the theory of the cyclotron maser instability to investigate how this process might influence the AKR wave spectrum and fine structure.
Menietti Douglas J.
Xin Linyuan
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