On 16/01/17 15:56, Ian Hinder wrote: > > On 11 Jan 2017, at 19:08, Maitraya Bhattacharyya > <maitraya.li...@gmail.com <mailto:maitraya.li...@gmail.com>> wrote: > >> Dear all, >> >> I have some 1d black hole data for which I would like to locate the >> event horizon. >> >> However I am new to the Einstein toolkit and therefore need your help >> in doing this. >> >> Can you please point out any resources which might help me. > > Hi, > > Locating the event horizon in a generic 3D numerical spacetime is quite > complicated and a lot of work (you need to trace null rays backwards in > time, which means reading the metric from 3D Cactus-format data files). > If the data is 1D, then it is much simpler to use a method adapted to > 1D, which would mean using something other than the Einstein Toolkit. > For example, it may be possible to do this in Mathematica, Matlab, or > similar, or even directly in Python. > > Does someone have a suggestion for where Maitraya could look for > numerical tools for doing this in 1D?
Hi! I wonder if there is a much simpler solution in this case than tracing geodesics. Maitraya, is your "1d black hole" a vacuum, spherically symmetric spacetime in standard GR? Is it expressed in a static foliation (does the metric depend on time)? Best, Eloisa _______________________________________________ Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users