Strong electron heat flux modes in Jupiter's foreshock
1984; American Geophysical Union; Volume: 11; Issue: 9 Linguagem: Inglês
10.1029/gl011i009p00869
ISSN1944-8007
AutoresS. L. Moses, F. V. Coroniti, C. F. Kennel, F. L. Scarf,
Tópico(s)Solar and Space Plasma Dynamics
ResumoAnalysis of Voyager plasma wave data from the Jovian foreshock has revealed the existence of a new oscillation with center frequency below f p and typically lying above the upper limit Doppler shift frequency for ion acoustic waves. The properties of these waves are consistent with modes generated by a strong electron heat flux in an unmagnetized plasma. Such modes become unstable when the effective drift velocity exceeds (n COLD /n HOT ) 1/2 times the thermal speed of the hot component. The occasional simultaneous appearance of more than one frequency band is a possible indication of multiple magnetic connection with the shock.
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