Nbody2: A Direct N-Body Integration Code

Details Nbody2: A Direct N-Body Integration Code Nbody2: A Direct N-Body Integration Code

2001-05-02

arxiv.org/abs/astro-ph/0105030v1

Astronomy and Astrophysics

Astrophysics

Latex (uses macros elsart.cls, harvard.sty. Accepted for publication in New Astronomy)

Scientific paper

10.1016/S1384-1076(01)00060-4

We give a full description of the code NBODY2 for direct integration of the gravitational N-body problem. The method of solution is based on the neighbour scheme of Ahmad & Cohen (1973) which speeds up the force calculation already for quite modest particle numbers. Derivations of all the relevant mathematical expressions are given, together with a detailed discussion of the algorithms. The code may be used to study a wide variety of self-consistent problems based on a small softening of the interaction potential.

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