Excellent, Miguel, that worked! Cheers.
El dom, 24 jul 2022 a las 14:19, <[email protected]> escribió: > Send Users mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.einsteintoolkit.org/mailman/listinfo/users > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Users digest..." > > > Today's Topics: > > 1. Re: AHFinderDirect test in cosmology (Miguel Zilhão) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 23 Jul 2022 23:26:28 +0100 > From: Miguel Zilhão <[email protected]> > Subject: Re: [Users] AHFinderDirect test in cosmology > To: Luciano Combi <[email protected]>, > <[email protected]> > Message-ID: <[email protected]> > Content-Type: text/plain; charset="UTF-8"; format=flowed > > hi Luciano, > > we've done something like this in https://arxiv.org/abs/1204.2019 > you can indeed find cosmological apparent horizons using AHFinderDirect, > the trick is to add the > following parameter: > > AHFinderDirect::surface_definition[1] = "inner expansion" > > hope this helps. > > cheers, > Miguel > > On 23/07/2022 06:48, Luciano Combi wrote: > > Hi all, > > > > I'm trying to use AHFinderDirect to find the apparent horizon in the de > Sitter metric, implemented > > in the Exact thorn in comoving coordinates. I tried a few things but > cannot get it to work. Have > > someone tried something similar, i.e. using the AHFD in cosmological > spacetimes instead of BHs? > > Below I attach a typical parfile I used > > > > Thanks! > > ------------------------------------------------------- > > # flesh > > cactus::cctk_itlast = 0 > > > > ActiveThorns = "PUGH" > > driver::ghost_size = 3 > > driver::global_nx = 120 > > driver::global_ny = 120 > > driver::global_nz = 120 ##57 > > > > ActiveThorns = "CoordBase SymBase CartGrid3D" > > grid::avoid_origin = "false" > > grid::type = "byspacing" > > grid::dxyz = 0.2 > > > > ActiveThorns = "ADMBase ADMCoupling StaticConformal CoordGauge SpaceMask > Exact" > > ADMBase::initial_lapse = "exact" > > ADMBase::initial_shift = "exact" > > ADMBase::initial_data = "exact" > > ADMBase::lapse_evolution_method = "exact" > > ADMBase::shift_evolution_method = "exact" > > ADMBase::metric_type = "physical" > > Exact::exact_model = "de Sitter+Lambda" > > Exact::de_Sitter_Lambda__scale = 0.50 > > > > > > ######################################## > > > > ActiveThorns = "IOUtil" > > IOUtil::parfile_write = "no" > > > > ######################################## > > > > ActiveThorns = "AEILocalInterp PUGHInterp PUGHReduce SphericalSurface > AHFinderDirect" > > > > AHFinderDirect::print_timing_stats = "true" > > > > AHFinderDirect::output_Theta_every = 1 > > AHFinderDirect::h_base_file_name = "dS.h" > > AHFinderDirect::Theta_base_file_name = "dS.Theta" > > > > AHFinderDirect::N_horizons = 1 > > AHFinderDirect::origin_x[1] = 0.0 > > AHFinderDirect::origin_y[1] = 0.0 > > AHFinderDirect::origin_z[1] = 0.0 > > > > AHFinderDirect::initial_guess_method[1] = "coordinate sphere" > > AHFinderDirect::initial_guess__coord_sphere__x_center[1] = 0.0 > > AHFinderDirect::initial_guess__coord_sphere__y_center[1] = 0.0 > > AHFinderDirect::initial_guess__coord_sphere__z_center[1] = 0.0 > > AHFinderDirect::initial_guess__coord_sphere__radius[1] = 1.0 > > ------------------------ > > -- > > *Luc Combi* > > CONICET PhD fellow (Buenos Aires, Argentina) > > Instituto Argentino de Radioastronomía > > > > _______________________________________________ > > Users mailing list > > [email protected] > > http://lists.einsteintoolkit.org/mailman/listinfo/users > > > ------------------------------ > > _______________________________________________ > Users mailing list > [email protected] > http://lists.einsteintoolkit.org/mailman/listinfo/users > > > End of Users Digest, Vol 148, Issue 12 > ************************************** > -- *Luc Combi* CONICET PhD fellow (Buenos Aires, Argentina) Instituto Argentino de Radioastronomía
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