Mathematics
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.285..557c&link_type=abstract
Nature, vol. 285, June 19, 1980, p. 557, 558.
Mathematics
10
Electromagnetic Scattering, Interplanetary Dust, Jupiter Rings, Planetary Magnetic Fields, Magnetic Effects, Magnetic Variations, Microparticles, Jupiter, Rings, Dust, Electromagnetic Properties, Scattering, Radius, Charged Particles, Orbits, Dipole, Plasmas, Corotation, Electric Fields, Magnetic Fields, Eccentricity, Mathematical Models, Perturbations, Voltage
Scientific paper
The lifetime of the charged, micron-sized dust particles found to lie in a ring at 1.8 Jupiter radii from Jupiter against electromagnetic scattering is estimated. Interactions of the particles with the Jovian magnetic field dipole are found to spread particle orbits out to a much greater extent than observed for particle charges greater than -10 V, and to result in slightly eccentric, open orbits for the dust particles, with eccentricities dependent on particle size. In addition, fluctuations within the magnetic field are found to lead to significant changes in the eccentricity and inclination of the ring particle orbits. It is concluded that Jovian ring particles, if charged to -10 V as is consistent with Voyager data, will be strongly perturbed and scattered on a short time scale (100 yr), so the ring must be constantly replenished or it is a temporary phenomenon. Finally, the dust cloud observed to extend above, below, and beyond the Jupiter ring is attributed to the electromagnetic scattering of particles smaller than the ring particles.
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