Lightning and plasma wave observations from the Galileo flyby of Venus

Details Lightning and plasma wave observations from the Galileo flyby of Venus Lightning and plasma wave observations from the Galileo flyby of Venus

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991sci...253.1522g&link_type=abstract

Science (ISSN 0036-8075), vol. 253, Sept. 27, 1991, p. 1522-1525.

Physics

41

Flyby Missions, Galileo Project, Lightning, Plasma Waves, Radio Signals, Venus Atmosphere, Electron Plasma, Extremely Low Radio Frequencies, Plasma Oscillations, Satellite Observation, Wave Generation

Scientific paper

Durig the Galileo flyby of Venus the plasma wave instrument was used to search for impulsive radio signals from lightning and to investigate locally generated plasma waves. A total of nine events were detected in the frequency range from 100 kilohertz to 5.6 megahertz. Although the signals are weak, lightning is the only known source of these signals. Near the bow shock two types of locally generated plasma waves were observed, low-frequency electromagnetic waves from about 5 to 50 hertz and electron plasma oscillation at about 45 kilohertz. The plasma oscillations have considerable fine structure, possibly because of the formation of soliton-like wave packets.

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