[Users] Is there any document of TwoPuncture's code?

[Miguel Zilhão]

hi,

sorry for the delay in replying.

i think the main reference/documentation for the TwoPunctures thorn is Marcus Ansorg's paper. as far 
as i understand, TwoPunctures can accommodate for sources on the rhs of equation (24) of 
gr-qc/0404056. this source term has to be provided by some other thorn, though, which needs to 
provide the function "Set_Rho_ADM" (like in the thorn TOVSolver).
TwoPunctures will then call this function (for instance, in FuncAndJacobian.c:254), write a local 
source array, and pass it to the equation to be solved for (eg, Equations.c:164).

as far as i know, TwoPunctures will not generate either spinning NS nor BH-NS initial data, though.

cheers,
Miguel

On 19/10/17 12:05, 赵志超 wrote:
> Hello everyone,
> 
> I want to change TwoPuncture's code to add some matter to BBH simulation.
> I think at first I should understand the method TwoPuncture used.
> 
> I have read two paper about this thorn by Marcus Ansorg et.al <http://et.al> and Vasileios 
> Paschalidis respectively.
> But I still do not understand how it treat the equation contains sources and a blackhole.
> 
> Another question, can TwoPuncture generate a spinning Neutron Star? I know it can generate BH-NS 
> initial data. This question equal to "Is the source included Momentum Constraint has been writen to 
> TwoPuncture's code? "
> 
> Best Wishes,
> ZhiChao, Zhao.
> 
> Institude of High Energy Physics, CAS, China.
> 
> 
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