Astronomisches Rechen-Institut Heidelberg

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ARI-Heidelberg Mitteilungen Serie B, No. 46

Author(s): Aarseth, S.J., Henon, M., Wielen, R.
Title: A Comparison of Numerical Methods for the Study of Star Cluster Dynamics
Source: Astron. Astrophys. 37, 183-187
Year: 1974
Abstract: We compare the results of three different numerical methods for computing the evolution of a spherical star cluster from a given initial state, under the influence of internal relaxation: the N-body integration, the Monte Carlo method, and the fluid-dynamical approach. The general features of the evolution are very similar in all cases. The rates of evolution differ somewhat; for stars of equal masses, taking the N-body integrations as a reference, the Monte Carlo models evolve too fast by a factor 1.5, and the fluid-dynamical models by a factor 2 to 3.
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