HJS - Hierarchical Jacobi
Symplectic integrator
A software package for integrating multiple stellar systems
The HJS package is a set of routines written by
Herve
Beust designed to integrate multiple stellar systems as well as groups
of test particles orbiting them. It uses the SWIFT
package written by Hal Levison and Martin Duncan.
The SWIFT package is designed for symplectically integrating the motion
of a set of massive bodies and massless test particles orbiting a much
more massive central body. It is well suited for planetary system studies.
The HJS package is a set of additional routines to SWIFT that permits the
integration of systems with more than one massive center. It is thus designed
for dynamical studies of multiple stellar systems.
The background of HJS is explained in Beust (2003),
A&A, 400, 1129. For a preprint, click
here.
In order to get a compressed tar file of HJS, click
here. Using HJS means that you have already installed the SWIFT
package. Put hjs.tar.gz into the root directory of the SWIFT distribution,
and type:
gunzip hjs.tar.gz
tar -xvf hjs.tar
This will create ad additional subdirectory /hjs
to the SWIFT distribution. Go into this directory and then
read the README file.
If you have further questions or problems, please do not hesitate to
contact me : Herve.Beust@obs.ujf-grenoble