1 files changed, 79 insertions, 0 deletions
diff --git a/doc/ThornGuide.tex b/doc/ThornGuide.tex
new file mode 100644
index 0000000..ea66490
--- /dev/null
+++ b/doc/ThornGuide.tex
@@ -0,0 +1,79 @@
+\documentstyle{report}
+%\def{\parameter{#1}}{{\it #1}}
+
+\begin{document}
+
+\chapter{IDAnalyticBH}
+
+\section{Introduction}
+
+\subsection{Purpose of Thorn}
+
+Thorn IDAnalyticBH provides analytic initial data for vacuum black 
+hole spacetimes. Initial data is provided for the 3-metric, extrinsic
+curvature, and if appropriate the conformal factor and it's spatial 
+derivatives. The current initial data sets are for a single (Schwarzschild)
+black hole in isotropic coordinates, up to four Brill-Lindquist black 
+holes, and any number of Misner-type black holes.
+
+\subsection{Technical Specification}
+
+\begin{itemize}
+
+\item{Implements} einsteinID
+\item{Inherits from} einstein
+\item{Tested with thorns} Einstein
+
+\end{itemize}
+
+\section{Theoretical Background}
+
+
+\section{Algorithmic and Implementation Details}
+
+This thorn uses no special numerical methods, however two points
+are worth noting
+
+\begin{enumerate}
+
+\item{} The solution for Misner is obtained by summing a sequence
+
+\item{} The spatial derivatives of the conformal metric (when required) 
+        are calculated accurately using finite differencing of the 
+        exact solution by a very small spacing
+
+\end{enumerate}
+
+\section{Using the Thorn}
+
+This thorn can provide either the physical metric (use\_conformal=''no'')
+or the conformal metric and a conformal factor (and its spatial derivatives)
+(use\_conformal=''yes''). In general, the option use\_conformal=''yes'' should 
+be used, since ????. 
+
+\section{Parameters}
+
+\subsection{List of all Parameters}
+
+\subsection{Discussion}
+
+\section{Interaction with Other Thorns}
+
+It is still to be decided how initial data should be supplied to
+for systems of evolution equations which use more or different 
+variables to those in the einstein implementation
+
+\section{Future Development}
+
+Initial data sets which are missing from this thorn include
+
+\begin{itemize}
+
+\item{} Boosted single black hole
+\item{} Single black hole in harmonic spatial coordinates
+\item{} Single black hole in Eddington-Finkelstein coordinates
+
+\end{itemize}
+
+
+\end{document}