On Jupiter's whistler emission

Details On Jupiter's whistler emission On Jupiter's whistler emission

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.6335l&link_type=abstract

Journal of Geophysical Research, vol. 87, Aug. 1, 1982, p. 6335-6338. Research supported by the Max Kade Foundation.

Physics

45

Electron Distribution, Jupiter Atmosphere, Plasma Waves, Thermal Emission, Whistlers, Distribution Functions, Gyrofrequency, Magnetohydrodynamic Stability, Maxwell Equation

Scientific paper

A theory explaining Jupiter's banded whistler emission, in particular low-frequency hiss and chorus, is proposed. It is shown that superthermal electrons described by a kappa distribution function cause whistler instability below one-third of the electron gyrofrequency, whereas a two temperature Maxwellian leads to a band of unstable growing modes just below one-half of the electron gyrofrequency. A superposition of both yields almost exactly the structure of whistler mode hiss and chorus detected by the Voyager 1 and 2 plasma wave instrument.

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