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Direct N-Body Simulations with a Recursive Center of Mass Reduction and Regularization

Published online by Cambridge University Press:  04 August 2017

J. G. Jernigan
J. G. Jernigan*
Affiliation:
University of California, Space Sciences Laboratory, Berkeley, Ca. 94720

Abstract

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We report on an investigation of the core collapse of an initially bound system of 1024 point masses based on a new numerical method which incorporates a recursive center of mass reduction of the N-body system and includes regularization of the two body encounters. A tree which organizes the point masses into a logarithmic hierarchy is the primary feature of the numerical algorithm. The spatial structure of the tree allows for rapid force calculation while the associated temporal structure allows for variable time steps. Simulations are calculated for several core collapse times in an effort to follow the end point evolution of the system. The point-like nature of the interactions are maintained throughout the simulations.

Type
May 30: Model System in the Point-Mass Approximation
Information
Symposium - International Astronomical Union , Volume 113: Dynamic of Stars Clusters , 1985 , pp. 275 - 284
Copyright
Copyright © Reidel 1985 

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