Latitudinal beaming of Jupiter's low frequency radio emissions

Details Latitudinal beaming of Jupiter's low frequency radio emissions Latitudinal beaming of Jupiter's low frequency radio emissions

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.5167a&link_type=abstract

Journal of Geophysical Research, vol. 84, Sept. 1, 1979, p. 5167-5174.

Astronomy and Astrophysics

Astronomy

11

Jupiter (Planet), Low Frequencies, Planetary Radiation, Radiation Distribution, Radio Emission, Decametric Waves, Explorer 34 Satellite, Explorer 38 Satellite, Latitude, Voyager Project, Jupiter, Radioemissions, Radio Astronomy Explorer 1, Magnetic Fields, Interplanetary Monitoring Platform 6, Voyager 1, Voyager 2, Comparisons, Wavelengths, Decameter Waves, Hectometer Waves, Spacecraft Observations, Data, Source (Location), Io, Satellites, Latitude, Flux, Density, Earth-Based Observations, Histograms, Morph

Scientific paper

Observations of Jupiter's radio emissions from Jovigraphic latitudes greater than 3.3 deg are reported. The measurements were obtained from the Voyager 2 spacecraft at declinations up to 6.5 deg, and when these results are compared with simultaneous observations from Voyager 1 near the ecliptic plane (at a Jovigraphic latitude of about 3 deg), they indicate that the latitudinal-beaming effects persist and may even become stronger with higher latitudes. The results were combined with earlier low-frequency measurements from periods with De as low as -3 deg in order to show the beaming effects the occurrence of the emission over a full 10 deg range of altitude. The results of observations at frequencies near 1 MHz are also discussed, which were obtained from Voyager 1 and 2 in 1978, Rae 1 in 1969, and Imp 6 in 1971-1972. The implications of the new results for models of Jupiter's radio-emission beam pattern are considered.

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