论文信息 - Numerical Experiments on the Stability of Spherical Stellar Systems

Numerical Experiments on the Stability of Spherical Stellar Systems

The concentric shell model is used to investigate numerically the stability of spherical steady-state stellar systems. Polytropic models with an isotropic velocity distribution are found to be stable almost down to the limiting index n=1/2. ‘Generalized polytropes’, with a distribution function depending on energy and angular momentum, show instability when n is low and the velocity distribution is radially elongated.

M. Hénon

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