GALAXY package for N-body simulation

This posting announces public availability of the GALAXY software package developed by the author over the past 40 years. It is a highly efficient code for the evolution of (almost) isolated, collisionless stellar systems, both disk-like and ellipsoidal. In addition to the N-body code galaxy, which offers eleven different methods to compute the gravitational accelerations, the package also includes sophisticated set-up and analysis software. This paper gives an outline of the contents of the package and provides links to the source code and a comprehensive on-line manual. While not as versatile as tree codes, the particle-mesh methods in this package are shown, for certain restricted applications, to be between 50 and 200 times faster than a widely-used tree code.

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