Evidence for solar wind control of Saturn radio emission

Details Evidence for solar wind control of Saturn radio emission Evidence for solar wind control of Saturn radio emission

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982stin...8220104d&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Planetary Radiation, Radio Emission, Saturn (Planet), Solar Wind, Voyager Project, Correlation Coefficients, Estimating, Kilometer Wave Orbiting Telescope, Modulation, Nonthermal Radiation, Periodic Variations, Radio Astronomy, Solar Physics, Solar Rotation, Solar Wind Velocity, Statistical Analysis

Scientific paper

Using data collected by the Voyager 1 and 2 spacecraft in 1980 and 1981, strong evidence is presented for a direct correlation between variations in the solar wind at Saturn and the level of activity of Saturn's nonthermal radio emission. Correlation coefficients of 57 to 58% are reached at lag times of 0 to 1 days between the arrival at Saturn of high pressure solar wind streams and the onset of increased radio emission. The radio emission exhibits a long-term periodicity of 25 days, identical to the periodicity seen in the solar wind at this time and consistent with the solar rotation period. The energy coupling efficiency between the solar wind with the Saturn radio emission is estimated and compared with that for Earth.

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