The Collapse of Rotating Gas Clouds

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概要

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• A two-dimensional hydrodynamical calculation method of self-gravitating rotating system is presented. The equation of fluid motion is treated in a Lagrangian form, while the Poisson equation of the gravitational potential is solved by the Finite-Element-Method. The results show that, in disagreement with the results of previous authors, there is no evidence of the ring formation along the equator, in case the fluid is initially rotating as a rigid body. The discrepancy is, presumably, due to the exact conservation of the angular momentum in the Lagrangian method and the inexact conservation in the Eulerian method. In this connection, it is demonstrated that a ring-like structure is actually formed under the circumstances where the angular momentum is transferred inwardly or a differential rotation of the fluid is assumed in the initial state.

• 理論物理学刊行会の論文
• 1977-09-25

著者

• Kamiya Yukihide

  Department Of Physics University Of Tokyo

関連論文

• The Collapse of Rotating Gas Clouds

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