[Users] Einstein Toolkit 2012 Paper NS gravitational collapse example

[Vassilios Mewes]

Hello all,

i have a few questions regarding the example of a collapsing NS from the
recent Einstein Toolkit paper...

in figure 19, the evolution of the radius of the NS is shown, alongside
with the appearance of the Apparent horizon...

the plot shows the evolution up to a time of roughly 180 (in M_sun)...my
first question is: for how long in total was the simulation running? for
how much longer is the evolution stable AFTER the BH has been formed? does
the code eventually crash or was there only interest in showing
the successful collapse and then stop the simulation manually after that
point?

furthermore, in the tov_collapse_vc_l3.par file for the collapse for the
paper there the following parameters for a thorn *corecollapsecontrol* the
following section:

*corecollapsecontrol::rho_max_list[0] = 2.5e15*
*corecollapsecontrol::rho_max_list[1] = 3.5e15*
*corecollapsecontrol::check_every = 64*
*
*
*corecollapsecontrol::rho_max_every = 16*
*CoreCollapseControl::handle_PMR = yes*
*CoreCollapseControl::output_control = no*
*CoreCollapsecontrol::bounce_rho = 2.0e33*
*corecollapsecontrol::bounce_criterion = "density"*
*corecollapsecontrol::bounce_entropy = 3.0e0*

what is this *corecollpasecontrol* thorn doing? and where can it be
obtained if it is necessary for successful simulations of NS to BH collapse?

best wishes,

Vassili
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