Collective radio emission of electron beams in aurora

Details Collective radio emission of electron beams in aurora Collective radio emission of electron beams in aurora

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985angeo...3..157v&link_type=abstract

Annales Geophysicae (ISSN 0755-0685), vol. 3, Mar.-Apr. 1985, p. 157-162.

Physics

Auroral Arcs, Electron Beams, Electron Precipitation, Radio Emission, Bremsstrahlung, F 2 Region, High Frequencies, Plasma Turbulence

Scientific paper

On the basis of the mechanism for collective relaxation of unstable auroral electron beams, proposed in a previous paper by this author (Vlasov), a study is made of auroral radio emission. It is shown that only plasma turbulence, generated by precipitating electron beams, can give rise to the measured superthermal HF-radio emission of aurora. Based on a discussion of a variety of mechanisms of conversion of plasma waves into electromagnetic waves the conclusion is drawn that the radio emission on a double plasma frequency predominates. For the measured unstable auroral electron beams a calculation of the intensity and bandwidth of radio emission is performed.

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