A beaming model of the Ioindependent Jovian decameter radiation based on multipole models of the Jovian magnetic field.
Abstract
A geometrical model is presented in which the apparent source locations of the Ioindependent decameter radiation are computed. The calculations assume that the radiation is produced by stably trapped electrons radiating near the local electron gyrofrequency and that the emission is then beamed onto a conical surface. The maximum occurrence probability of noise storms is associated with regions in the Jovian magnetosphere where the axis of the emission cone is most inclined toward the Jovian equatorial plane. The calculations utilize and compare two of the octopole spherical harmonic expansions of the Jovian magnetic field constructed from data accumulated by the fluxgate and vector helium magnetometers on board Pioneer 11.
 Publication:

The Astrophysical Journal
 Pub Date:
 May 1979
 DOI:
 10.1086/157053
 Bibcode:
 1979ApJ...229.1186G
 Keywords:

 Decametric Waves;
 Jupiter (Planet);
 Multipoles;
 Planetary Magnetic Fields;
 Radio Emission;
 Spherical Harmonics;
 Declination;
 Gyrofrequency;
 Io;
 Pioneer 11 Space Probe;
 Planetary Magnetospheres;
 Trapped Particles;
 PLASMAS;
 MATHEMATICAL MODELS;
 RADIATION;
 I0;
 MEGAHERTZ;
 JUPITER;
 SATELLITES;
 DECAMETER WAVES;
 MAGNETOSPHERE;
 EMISSIONS;
 CONES;
 HELIUM;
 SPHERICAL HARMONIC ANALYSIS;
 ELECTRONS;
 MAGNETOMETERS;
 PIONEER 11;
 Lunar and Planetary Exploration; Jupiter;
 Jupiter:Magnetic Field;
 Jupiter:Radio Radiation