A comparison of numerical methods for the study of star cluster dynamics

Details A comparison of numerical methods for the study of star cluster dynamics A comparison of numerical methods for the study of star cluster dynamics

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974a%26a....37..183a&link_type=abstract

Astronomy and Astrophysics, vol. 37, no. 1, Dec. 1974, p. 183-187.

Computer Science

Numerical Analysis

135

Astronomical Models, Computerized Simulation, Numerical Analysis, Star Clusters, Stellar Evolution, Celestial Mechanics, Fluid Dynamics, Fokker-Planck Equation, Many Body Problem, Mathematical Models, Monte Carlo Method, Numerical Integration, Relaxation Method (Mathematics)

Scientific paper

Comparison of 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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