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Direct N-Body Calculations

Published online by Cambridge University Press:  04 August 2017

Sverre J. Aarseth
Sverre J. Aarseth*
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge CB3 OHA England

Abstract

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The main principles for direct integration of large point-mass systems are outlined. Most particles are advanced by the Ahmad-Cohen neighbour scheme, using fourth-order force polynomials and individual time-steps. Close encounters and persistent binaries are handled by two-body regularization, whereas extreme triple and quadruple configurations are treated as unperturbed systems by special regularization techniques. As an illustration of these methods, we discuss some recent results of an isolated system containing 1000 particles of unequal mass, with special emphasis on the post-collapse phase.

Type
May 30: Model System in the Point-Mass Approximation
Information
Symposium - International Astronomical Union , Volume 113: Dynamic of Stars Clusters , 1985 , pp. 251 - 259
Copyright
Copyright © Reidel 1985 

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