On detection of radio bursts associated with Jovian and Saturnian lightning

Details On detection of radio bursts associated with Jovian and Saturnian lightning On detection of radio bursts associated with Jovian and Saturnian lightning

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...146l..15z&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 146, no. 1, May 1985, p. L15-L18.

Astronomy and Astrophysics

Astrophysics

23

Jupiter Atmosphere, Lightning, Planetary Radiation, Radio Bursts, Saturn Atmosphere, Density Distribution, Electric Discharges, Ionospheric Electron Density, Ionospheric Propagation, Planetary Ionospheres, Planets, Jupiter, Saturn, Giant Planets, Radio Emissions, Lightning, Source, Voyager Missions, Pra, Planetary Radio Instrument, Comparisons, Absorption, Radio Waves, Ionosphere, Electrons, Density, Observations

Scientific paper

During both Voyager-Saturn encounters, the planetary radio astronomy instrument recorded intense short-lived radio bursts. These bursts originate from an extended long-lived storm system located in Saturn's equatorial atmosphere. However, no comparable radio emissions were detected during Voyager-Jupiter encounters, although lightning activity is known to exist on this planet. The author shows that this non-detection is due to strong absorption suffered by the radio waves propagating through Jupiter's lower ionospheric layers. Consequently, from the detection of Saturnian radio bursts, the author infers a stringent upper limit to the electron density in Saturn's lower ionosphere, where no observational result is available. These results are compared with the case of the Earth.

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