Bombardment of planetary rings by meteoroids - General formulation and effects of Oort Cloud projectiles

Details Bombardment of planetary rings by meteoroids - General formulation and effects of Oort Cloud projectiles Bombardment of planetary rings by meteoroids - General formulation and effects of Oort Cloud projectiles

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...84..467c&link_type=abstract

Icarus (ISSN 0019-1035), vol. 84, April 1990, p. 467-501.

Physics

48

Hypervelocity Projectiles, Meteoritic Damage, Oort Cloud, Planetary Rings, Aberration, Angular Velocity, Ejecta, Interplanetary Dust, Radial Velocity, Planets, Rings, Bombardment, Meteoroids, Oort Cloud, Distribution, Intensity, Velocity, Longitude, Saturn, Spokes, Formation, Origin, Ejecta, Parameters, Radiative Transfer, Impacts, Impact Effects, Scattering, Particles, Uranus, C Ring, Beta Ring, Flux, Calculations, Diagrams, Angular Momentum, Deposition, Alpha Ring, Evolution

Scientific paper

A general solution is obtained for the angular distribution of the intensity and velocity of interplanetary projectiles impinging on a planetary ring system. Three significant results emerge from the solution: (1) a variation with orbital longitude is demonstrated in the impact velocity-weighted impact rate of the planetary rings' cometary meteoroids; (2) the angular distribution of ejecta intensity due to the bombardment of a planetary ring by interplanetary meteoroids is determined; and (3) the radial drift velocity due to both simple mass-loading and aberration-induced asymmetry in the impact rate is calculated for a planetary ring of arbitrary optical depth. Attention is given to results for projectiles with Oort Cloud-type orbits.

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