Bottlenecks in simulations of dense stellar systems

Details Bottlenecks in simulations of dense stellar systems Bottlenecks in simulations of dense stellar systems

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...365..208m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 365, Dec. 10, 1990, p. 208-218.

Statistics

Computation

28

Binary Stars, Computational Astrophysics, Many Body Problem, Star Clusters, Star Distribution, Stellar Systems, Galactic Nuclei, Globular Clusters, Space Density, Stellar Motions, Stellar Orbits

Scientific paper

The efficiency of different algorithms for treating the formation and evolution of binaries, as well as higher-order multiple systems, in the context of N-body calculations is discussed. How the calculational cost of binaries can be estimated is addressed, and how the ratio of the calculational cost of binaries to the total calculational cost scales with the total number of stars N is examined. It is found that the cost of binaries becomes negligible for large N. Empirical results obtained for N between 100 and 3000 show reasonable agreement with the theoretical considerations. The possibility of treating close encounters between stars using fully self-consistent three-dimensional hydrodynamic calculations is discussed.

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