The plasma wave environment of an auroral arc. III - VLF hiss

Details The plasma wave environment of an auroral arc. III - VLF hiss The plasma wave environment of an auroral arc. III - VLF hiss

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.7581b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, July 1, 1987, p. 7581-7605.

Computer Science

Sound

23

Auroral Arcs, Electric Field Strength, Plasma Waves, Very Low Frequencies, Electron Distribution, Hiss, Rocket Sounding

Scientific paper

Auroral hiss in the vicinity of a quiet arc is studied by comparing the data obtained from a sounding rocket with predictions of the convective beam amplification (CBA) model of auroral hiss generation. It is concluded that the VLF auroral hiss observed by the payload appears to have been natural in origin. The CBA model produces predicted hiss spectra that are in good agreement with the data. The hiss intensity above the ionosphere was greater equatorward of the arc than within the arc; this pattern appears to be the result of emission geometry and refraction. Hiss intensity was not found to be better correlated with 0.1-0.7 keV fluxes than with more energetic electrons. No evidence is found for a three-wave parametric decay process. The data are consistent with a weak hiss source located at an altitude of 110-120 km.

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