A code for N-body simulation of highly clustered gravitational systems

Details A code for N-body simulation of highly clustered gravitational systems A code for N-body simulation of highly clustered gravitational systems

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242..595l&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 242, Feb. 15, 1990, p. 595-605. Research supported by M

Statistics

Computation

7

Computational Astrophysics, Galactic Clusters, Gravitational Effects, Many Body Problem, Astronomical Models, Particle Mass, Spherical Coordinates, Three Dimensional Motion

Scientific paper

A spherical coordinate system can be transformed into a three-dimensional half-torus by a trigonometric mapping of the radial domain. As only angular variables are involved, spherical harmonics and cosine expansions of the field variables can be used, taking full advantage of the accuracy and efficiency of the spectral algorithms. Following this approach, an N-body code based on the Particle-Mesh technique has been implemented to simulate collisionless highly inhomogeneous gravitating systems. Computational performances and numerical reliability have been tested for some stable and unstable equilibrium configurations as well as for merging of equilibrium structures.

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