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Diffstat (limited to 'README')
| -rw-r--r-- | README | 12 |
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@@ -7,11 +7,13 @@ CVS info : $Header$ Purpose of This Thorn ===================== -This thorn finds an apparent horizon given the 3D xyz-grid metric and -extrinsic curvature (and optionally the StaticConformal conformal factor). -It uses a direct method, writing the apparent horizon equation as an -elliptic PDE on angular-coordinate space. This is fast, but does -require an intitial guess for the apparent horizon position. +This thorn finds an apparent horizon (or more generally, a closed +2-surface with S^2 topology having any desired constant expansion) +given the 3D xyz-grid metric and extrinsic curvature (and optionally +the StaticConformal conformal factor). It uses a direct method, +writing the apparent horizon equation as an elliptic PDE on +angular-coordinate space. This is very fast and accurate, but +it does require an intitial guess for the apparent horizon position. Documentation |