A reconciliation of propagation modes of auroral kilometric radiation

Details A reconciliation of propagation modes of auroral kilometric radiation A reconciliation of propagation modes of auroral kilometric radiation

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.7459h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Sept. 1, 1984, p. 7459-7466.

Physics

33

Auroral Zones, Kilometric Waves, Propagation Modes, Exos-D Satellite, Ionospheric Electron Density, Latitude, Ray Tracing, Satellite Observation

Scientific paper

Three-dimensional ray-tracing and comparisons with data gathered by the Hawkeye 1, EXOS-B, Voyager 1 and 2, and ISIS 1 spacecraft are employed to study propagation modes of auroral kilometric radiation. The ray-tracing is performed using a magnetospheric electron density model of the auroral plasma cavity and coverage is given to both right-hand extraordinary (RX) and left-hand ordinary (LO) modes in geomagnetic coordinates. It is found that LO mode waves have a wider propagation range than RX mode waves. The stronger RX mode dominates at higher latitudes and vanishes at lower latitudes. A cyclotron maser mechanism is invoked as arising in upward propagating RX mode waves and explaining previously obtained spacecraft data.

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