Continuum radiation at Uranus

Details Continuum radiation at Uranus Continuum radiation at Uranus

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.1103k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Feb. 1, 1990, p. 1103-1111.

Other

3

Continuous Radiation, Planetary Radiation, Radio Emission, Uranus (Planet), Plasma Density, Solar Wind, Voyager 2 Spacecraft, Uranus, Radiation, Emissions, Frequencies, Intensity, Magnetosphere, Spacecraft Observations, Voyager 2 Mission, Spectra, Dayside, Trapping, Comparisons

Scientific paper

One Uranian radio emission which has thus far escaped attention is an analog of continuum radiation at earth, Jupiter, and Saturn. The emission is found to be propagating in the ordinary mode in the range of one to a few kHz on the inbound leg of the Voyager 2 encounter, shortly after the magnetopause crossing. The Uranian continuum radiation is notably weak, making it more like that detected at Saturn than the extremely intense Jovian continuum radiation. The Uranian emission shows some evidence for narrow-band components lying in the same frequency regime as the continuum, completing the analogy with the other planets, which also show narrow-band components superimposed on the continuum spectrum. It is argued that the low intensity of the Uranian continuum is most likely related to the lack of a density cavity within the Uranian magnetosphere that is deep relative to the solar wind plasma density.

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