#878: Tests using Exact should use EinsteinExact ------------------------------------+--------------------------------------- Reporter: hinder | Owner: Type: enhancement | Status: new Priority: major | Milestone: ET_2012_11 Component: EinsteinToolkit thorn | Version: Resolution: | Keywords: ------------------------------------+---------------------------------------
Comment (by eschnett):
The Brill-Lindquist coordinates are really simple -- the conformal factor is 1+m/(2r), everything else is Minkowski. We should add this to EinsteinExact. Could you add a parameter to change the matching radius to ModifiedSchwarzschildBL? In experiments we learned that one needs to have about ten unmodified grid points inside the event horizon to avoid things propagating to the outside.
On a different note: many exact solutions will have singularities. Would it make sense to have a generic way of handling them, i.e. a generic way to replace r=0 in analytic expressions?
I don't know this particular test case, but in principle QLM is also used inside the horizon.