Upper limit set for level of lightning activity on Titan

Details Upper limit set for level of lightning activity on Titan Upper limit set for level of lightning activity on Titan

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.343..442d&link_type=abstract

Nature (ISSN 0028-0836), vol. 343, Feb. 1, 1990, p. 442-444.

Astronomy and Astrophysics

Astronomy

21

Lightning, Planetary Ionospheres, Planetary Meteorology, Satellite Atmospheres, Titan, Electric Discharges, Power Spectra, Radio Astronomy, Voyager 1 Spacecraft, Saturn, Satellites, Titan, Lightning, Diagrams, Energy, Atmosphere, Spacecraft Observations, Voyager 1 Mission, Radio Waves, Frequencies, Pra Instrument, Analysis, Emissions, Discharge, Hydrocarbons

Scientific paper

Because optically thick cloud and haze layers prevent lightning detection at optical wavelength on Titan, a search was conducted for lightning-radiated signals (spherics) at radio wavelengths using the planetary radioastronomy instrument aboard Voyager 1. Given the maximum ionosphere density of about 3000/cu cm, lightning spherics should be detectable above an observing frequency of 500 kHz. Since no evidence for spherics is found, an upper limit to the total energy per flash in Titan lightning of about 10 to the 6th J, or about 1000 times weaker than that of typical terrestrial lightning, is inferred.

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