Abstract
A fourth-order polynomial method for the integration of N-body systems is described in detail together with the computational algorithm. Most particles are treated efficiently by an individual time-step scheme but the calculation of close encounters and persistent binary orbits is rather time-consuming and is best performed by special techniques. A discussion is given of the Kustaanheimo-Stiefel regularization procedure which is used to integrate dominant two-body encounters as well as close binaries. Suitable decision-making parameters are introduced and a simple method is developed for regularizing an arbitrary number of simultaneous two-body encounters.
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© 1972 D. Reidel Publishing Company, Dordrecht, Holland
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Aarseth, S.J. (1972). Direct Integration Methods of the N-Body Problem. In: Lecar, M. (eds) Gravitational N-Body Problem. Astrophysics and Space Science Library, vol 31. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2870-7_37
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DOI: https://doi.org/10.1007/978-94-010-2870-7_37
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-2872-1
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