CVS info   : $Header$

Cactus Code Thorn EHFinder
Authors    : Peter Diener <diener@aei.mpg.de>
Maintainer : Peter Diener <diener@aei.mpg.de>
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Purpose of the thorn:

To find the event horizon of a numerical spacetime by integrating a null
surface backwards in time.

The surface will be parametrized as the 0 value isosurface of a level
set function. This ensures that it is possible to handle cases when the
topology changes (when evolving backwards in time) from one common event
horizon to two (or more) individual event horizons.


Documentation:

The documentation can be found in the Thorn Guide provided with this
Thorn. For additional details see gr-qc/0305039.


History:

This event horizon finder was written by Peter Diener in 2002-2003.


Copyright & Licensing:

This thorn is copyright (C) 2002-2003
by Peter Diener <diener@aei.mpg.de>.

This program 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 program 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