An Inelastic Collision Model for the Evolution of"Planetary Rings"

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概要

• 論文の詳細を見る

• We show that ringlets of a planet can be formed by inelastic collisions. If the colli-sion law is v' = - ev (v' and v are relative velocities after and before the collision),then the configuration of the particles evolves from a 3-dimensional torus to a 2-dimensional disc and finally to l-dimensional sharp ringlets. The theory is alsodemonstrated and confirmed by numerical experiments. Velocity vectors of the par-ticles tend equalize at collisions. This causes the angular momenta to equalize, andthe orbits draw nearer. The above statement is rigorous in our special model, and ap-plies qualitatively in the general inelastic collision model. It seems apparent that collisions diffuse a spatial pattern. But, on the contrary, ringlets are sharpened by inelasticcollisions.[p1anetary ring, ringlet, inelastic collision, numerical simulation, Kepler orbit, lf coefficient of restitution, evolution of patternI

• 社団法人日本物理学会の論文
• 1990-01-15

著者

• SHIDA Koichiro

  Department of Computer Science,Keio University

• Shida Koichiro

  Department Of Applied Science University Of California At Davis

• Shida Koichiro

  Department Of Computer Science Keio University

• Kawai Toshio

  Department Of Physics Keio University

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• An Inelastic Collision Model for the Evolution of"Planetary Rings"

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