Auroral precipitation caused by auroral kilometric radiation

Details Auroral precipitation caused by auroral kilometric radiation Auroral precipitation caused by auroral kilometric radiation

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.8792c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Aug. 1, 1987, p. 8792-8794.

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16

Auroras, Electron Precipitation, Electron Scattering, Energetic Particles, Kilometric Waves, Lasing, Earth Ionosphere, Electron Flux Density, Magnetic Fields, Space Plasmas

Scientific paper

If the auroral kilometric radiation (AKR) were generated by loss cone lasing on closed field lines, as has been proposed, then it should cause substantial auroral precipitation by the pitch angle scattering of energetic electrons into the loss cone. A rough estimate for this precipitation, based upon the observed AKR amplitudes, would imply a flux of at least 2 x 10 to the 8th el/sq cm sec over the projected ionospheric footprint of an individual laser and, if most of the AKR radio lasers occupied the same electron drift an L shell, an arc of 8 km width with a minimum average flux of roughly 10 to the 9th el/sq cm sec. It is believed that this will account for auroral arcs and other aspects of auroral electron precipitation.

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