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Cactus Code Thorn Exact
Authors : Carsten Gundlach initially, plus many other authors.
Maintainer : Jonathan Thornburg <jthorn@aei.mpg.de>
CVS info : $Header$
--------------------------------------------------------------------------
Purpose of the thorn:
The initial purpose of this thorn was the comparison of numerical
spacetimes against exact solutions. One particular solution,
the boost-rotation-symmetric spacetimes, was the first application.
Later, the thorn developed as a reservoir for a variety of exact spacetimes,
some of them in different coordinate systems, and even some non-Einstein
spcetimes. All of these exact spacetimes have been found useful for
testing different aspect of the code. Since mamy different people have
contributed to this thorn by adding new exact solutions, you should expect
many different styles of coding here.
For more details see the comments in the param.ccl file, and the
documentation in the directory doc. For instructions on how to add
a new model, see doc/how_to_add_a_new_model.
Note that the June 2002 revisions to this thorn included renaming
most of the parameters. The perl script par/convert-par.pl will
convert old parameter files to use the new names, renaming the old
parameter files to ".par.bak" as backups.
Copyright
=========
As noted above, this code has been hacked on by many different people,
so its' copyright status is somewhat unclear.
Therefore here is a (incomplete) list of authors and their wishes:
Jonathan Thornburg:
-------------------
However, the new code added in the June 2002 revisions is
copyright (C) 2001-2002 by Jonathan Thornburg <jthorn@aei.mpg.de>.
This new code is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This new code is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this thorn (see the file COPYING in this directory);
if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
Frank Loeffler
--------------
Code added by myself (which is mainly Minkowski_conf_wave and the
code using the conformal factor added in January 2003) is free
software, you can redistribute it and/or modify it under the terms
of the GNU General Public License as published bythe Free Software
Foundation; either version 2 of the License, or(at your option)
any later version.
This new code is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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