Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987icar...70..124n&link_type=abstract
Icarus (ISSN 0019-1035), vol. 70, April 1987, p. 124-137.
Astronomy and Astrophysics
Astronomy
49
Astronomical Models, Erosion, Micrometeoroids, Planetary Evolution, Saturn Rings, Gravitational Effects, Mass Flow Rate, Optical Thickness, Particle Size Distribution, Saturn, Micrometeorites, Erosion, Models, Age, Rings, Particles, Size, C Ring, Charged Particles, Debris, Magnetic Fields, Gravity Effects, B Ring, Oscillations, Models, Formation, Optical Properties, Thickness, Mass, Flux, Calculations, Distribution, Surface, Density, Wavelengths
Scientific paper
The authors employ in this paper a much more refined and detailed model of the ring erosion than that of Northrop and Hill (1983). The consequences of impact erosion of the rings via micrometeorite bombardment followed by electromagnetic removal of some of the products are calculated using the Morfill et al. (1983) estimates of the micrometeorite flux. From this the authors obtain improved estimates of the lifetime of the rings (4.4 to 67 myr). From the radial dependence of the optical thickness at the C-B ring boundary, they identify submicron grains (not plasma) as the principal mass loss carriers. However, mass transport in the form of ions may be important elsewhere in the rings, particularly in the B ring (e.g., Ip 1983).
Connerney Jack E. P.
Northrop Theodore G.
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