Radio emission signature of Saturn immersions in Jupiter's magnetic tail

Details Radio emission signature of Saturn immersions in Jupiter's magnetic tail Radio emission signature of Saturn immersions in Jupiter's magnetic tail

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.6904d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Sept. 1, 1983, p. 6904-6910.

Astronomy and Astrophysics

Astronomy

17

Planetary Magnetic Fields, Radio Emission, Signature Analysis, Jupiter (Planet), Kilometric Waves, Saturn (Planet), Saturn, Emissions, Radio Observations, Juputer, Magnetotails, Pra, Planetary Radio Astronomy Experiment, Voyager 2, Kilometer Waves, Radiation, Wavelengths, Magnitude, Energy, Voyager 1, Comparisons, Source, Solar Wind, Formation

Scientific paper

The author shows that Saturn experienced repeated and sometimes sustained encounters with the magnetic tail of Jupiter during the period from May through August 1981. This conclusion is based on Voyager 2 observations of strong decreases in the energy level of the Saturn radio emission that are closely associated with times when the spacecraft was also inside Jupiter's magnetic tail. Voyager 1 observations over a similar length of time and inbound trajectory showed no such radio emission dropouts. The restriction of the dropouts to the V2 analysis interval is explained by the proximity of Saturn at this time to the Jupiter-sun line and hence to Jupiter's extended tail. The radio emission dropouts themselves are largely explained by the fact that the solar wind pressure, which is the principal driver of the Saturn kilometric radiation, can drop below average low solar wind conditions by several orders of magnitude during a tail immersion.

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