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Detailed Reference Information
Sawyer et al. 1995
Sawyer, C.B., King, N.V., Romig, J.H. and Warwick, J.W. (1995). Neptune radio emission in dipole and multipole magnetic fields. Journal of Geophysical Research 100: doi: 10.1029/94JA02934. issn: 0148-0227.

We study Neptune's smooth radio emission in two ways: we simulate the observations and we then consider the radio effects of Neptune's magnetic multipoles. A procedure to deduce the characteristics of radio sources observed by the Planetary Radio Astronomy experiment minimizes limiting assumptions and maximizes use of the data, including quantitative measurement of circular polarization. Study of specific sources simulates time variation of intensity and apparent polarization of their integrated emission over an extended time period. The method is applied to Neptune smooth recurrent emission (SRE). Time series are modeled with both broad and beamed emission patterns, and at two frequencies which exhibit different time variation of polarization. These dipole-based results are overturned by consideration of more complex models of Neptune's magnetic field. Any smooth emission from the anticipated auroral radio source is weak and briefly observed. Dominant SRE originates in complex fields at midlatitude. Possible SRE source locations overlap that of ''high-latitude'' emission (HLE) between +(out) and -(in) quadrupoles. This is the first identification of multipolar magnetic structure with a major source of planetary radio emission. ¿ American Geophysical Union 1995

BACKGROUND DATA FILES

Abstract

Keywords
Radio Science, Radio astronomy, Magnetospheric Physics, Planetary magnetospheres (5443, 5737, 6030), Planetology, Solar System Objects, Neptune, Planetology, Fluid Planets, Magnetospheres
Journal
Journal of Geophysical Research
http://www.agu.org/journals/jb/
Publisher
American Geophysical Union
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