Radio detection of Uranian lightning by Voyager 2

Details Radio detection of Uranian lightning by Voyager 2 Radio detection of Uranian lightning by Voyager 2

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..605z&link_type=abstract

Nature (ISSN 0028-0836), vol. 323, Oct. 16, 1986, p. 605-608. CNES-supported research.

Astronomy and Astrophysics

Astronomy

31

Lightning, Planetary Radiation, Radio Bursts, Uranus Atmosphere, Voyager 2 Spacecraft, Electrostatics, Ionospheric Electron Density, Planetary Ionospheres

Scientific paper

Within distances of ≡600,000 km from Uranus, the Planetary Radio Astronomy experiment aboard the Voyager 2 spacecraft detected impulsive (100 - 300 ms) bursts of broad-band (≤900 kHz to ≡40 MHz) radio emission. This emission is very different from the uranian magnetospheric radio component, also discovered during the recent Voyager - Uranus encounter. By analogy with the Saturn electrostatic discharges (SED), the term uranian electrostatic discharges (UED) is adopted for these new radio bursts. The authors have determined the physical characteristics of UED, and in the context of their interpretation as lightning-associated radio bursts, have derived ionospheric peak electron densities over the uranian day- and nightside hemispheres.

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