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Title:The radiation belts of jupiter
Author(s):Degioanni, Joseph J.C.
Director of Research:Dickel, John R.
Department / Program:Astronomy
Discipline:Astronomy
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D. (doctoral)
Genre:Dissertation
Subject(s):Jovian magnetosphere
Jupiter
Radiation belts
Decimetric continuum
Thermal emission
Abstract:A simplified model of the Jovian magnetosphere consists of a thermal plasma with superimposed radiation belts. Recently Melrose (1966) and Ioannidis and Brice (1971) have described the possible sources and distribution of the thermal plasma trapped in the magnetosphere of Jupiter. The model to be described here deals exclusively with the cloud of relativistic electrons which forms the radiation belts at a distance of a few Jovian radii from the planet and is responsible for the intense continuum of decimetric emission. The purpose of this model is to describe the structure of the radiation belts on the basis of the observations of their continuum emission at decimetric wavelengths. Most of this data was obtained in the past decade and consists of the following: (i) observations of the integrated flux in the decimetric continuum (See Figure 16a); (ii) observations of the degree of polarization of the radiation (See=·Figures 17 and 18); (iii) observations of the dependence on the rotation of Jupiter (or dependence on the System III longitude) of the integrated flux, degree of polarization, and orientation of the plane of polarization (See Figure 33a); (iv) high-resolution interferometric studies of the radiation belts (Berge, 1966; Branson, 1968); (v) lunar occultation studies of the radiation belts (Gulkis, 1970). In addition, the non-thermal emission is separated from the thermal emission of the planetary disk with the aid of the observations by Berge (1966) and Branson (1968) and models of Jupiter's atmosphere by Goodman (1969).
Issue Date:1973-06
Publisher:Department of Astronomy. College of Liberal Arts and Sciences. The University of Illinois at Urbana-Champaign.
Genre:Dissertation / Thesis
Type:Text
Language:English
URI:http://hdl.handle.net/2142/79028
Date Available in IDEALS:2015-08-08


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