Mathematics – Probability
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979stin...7923869a&link_type=abstract
Unknown
Mathematics
Probability
Extraterrestrial Radio Waves, Jupiter (Planet), Low Frequencies, Planetary Radiation, Radio Emission, Explorer 38 Satellite, Explorer 43 Satellite, Voyager Project
Scientific paper
By comparing RAE-1 and IMP-6 satellite measurements of Jupiter's radio emission near 1MHz with recent Voyager-1 and 2 observations in the same frequency range, the properties of the low frequency radiation pattern over a 10 deg range of latitudes with respect to the Jovian rotation equator can be studied. These observations, which cover a wider latitudinal range than is possible from the earth, are consistent with many aspects of earlier ground-based measurements used to infer a sharp beaming pattern for the decameter wavelength emissions. Marked, systematic changes are found in the statistical occurrence probability distributions with system 3 central meridian longitude as the jovigraphic latitude of the observer changes over this range. Simultaneous observations by the two Voyager spacecraft suggest that the instantaneous beam width may be no more than a few degrees at times. The new hectometer-wave results can be interpreted in terms of a narrow, curved sheet at a fixed magnetic latitude into which the emission is beamed to escape the planet.
Alexander Joseph K.
Desch Michael D.
Kaiser Michael L.
Thieman James R.
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