Computer Science
Scientific paper
Dec 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...29..455r&link_type=abstract
Icarus, vol. 29, Dec. 1976, p. 455-461.
Computer Science
5
Circular Polarization, Jupiter (Planet), Microwave Emission, Planetary Radiation, Radiation Belts, Angular Distribution, Magnetic Flux, Pitch (Inclination), Planetary Rotation, Radiant Flux Density, Synchrotron Radiation
Scientific paper
Measurements of the 1.4-GHz emission from Jupiter made when the tilt of the northern end of Jupiter's rotation axis out of the plane of the sky was 3.1 deg show the circular polarization to vary from + 0.8 to - 1.1% as the planet rotates. The rms scatter of the points about the mean curve is only 0.09%. Expressed as a function of Jovian magnetic latitude, the polarization at first increases linearly but the curve flattens beyond latitudes of the order of 7 deg. This shape requires that the radiating electrons have a pitch-angle distribution similar to that inferred earlier from beaming and linear polarization. The magnitude of the circular polarization requires an equatorial magnetic flux density in the belt of about 0.3 G, consistent with the Pioneer results. Compared with measurements made one orbital period earlier, the total flux density has decreased by 15%, but the beaming has not changed appreciably.
Komesaroff M. M.
Roberts James A.
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