Low-frequency Jovian emission and solar wind magnetic sector structure

Details Low-frequency Jovian emission and solar wind magnetic sector structure Low-frequency Jovian emission and solar wind magnetic sector structure

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.306..767z&link_type=abstract

Nature, Volume 306, Issue 5945, pp. 767-768 (1983).

Astronomy and Astrophysics

Astronomy

32

Scientific paper

The Earth, Jupiter and Saturn emit non-thermal low-frequency radiations with similar characteristics. For the Earth and Saturn, the radio emissions are known to fluctuate with a time scale of several days, correlated with variations of the solar wind or related phenomena at the planet1-4. Several studies of the jovian radiation at decametre wavelengths, from ground-based observations, suggest that the non-Io-controlled emission fluctuates in response to the sector structure of the interplanetary magnetic field5-9. We study here the long-term fluctuations of the jovian emission at hectometre and kilometre wavelengths. We use observations from the Planetary Radio Astronomy (PRA) experiment aboard the two Voyager spacecraft. We show that these emissions are strongly affected by the magnetic sector structure at Jupiter. This leads us to discuss the position of the sources of emission in the jovian magneto-sphere.

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