[Users] problems about accretion disk of binary neutron star

[黃世杰]

OK~ Thank you for the information.

Roland Haas <rhaas at illinois.edu> 於 2018年11月8日 週四 下午11:26 寫道：

> Hello Jie,
>
> you will most likely need another thorn. I would say the closest thorn
> that does what you would like to do is the "Outflow" thorn (in
> EinsteinAnalysis/Outflow) that can track the amount of rest mass
> flowing through a SphericalSurface. So you could make it measure the
> amount of material crossing the apparent horizon and also eg the among
> falling through the innermost stable circular orbit.
>
> For energy you'd have to decide on some efficiency of converting rest
> mass to energy (for the material falling through the ISCO).
>
> You can use the Outflow test file as a starting point (and also consult
> its documentation:
>
> https://www.einsteintoolkit.org/thornguide/EinsteinAnalysis/Outflow/documentation.html):
>
> https://bitbucket.org/einsteintoolkit/einsteinanalysis/raw/05e1f24828dc5a0a819d57225957954da538c031/Outflow/test/moving_tov.par
>
> Yours,
> Roland
>
> > Dear all,
> > I want to add energy into the accretion disk of the binary neutron star
> > merger in gallery code(
> https://einsteintoolkit.org/gallery/bns/index.html)and
> > calculate the accretion rate (dM/dt) do I need to add some other thorn
> into
> > the simulation, or could just modify the parameter file of the gallery
> code?
> > Thank you
> > Gratefully,
> > Jie
>
>
>
> --
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