Dear Roland,
Thank you for your suggestion and information!
Best regards,
Chia-Hui
寄件者: Roland Haas
寄件日期: 2018年10月5日 下午 11:49:50
收件者: 林家暉
副本: Einstein Toolkit Users
主旨: Re: [Users] mass estimation of neutron star
Hello Chia-Hui,
https://stellarcollapse.org
Roland Haas
> 寄件日期: 2018年10月2日 下午 09:11:21
> 收件者: 林家暉
> 副本: Einstein Toolkit Users
> 主旨: Re: [Users] mass estimation of neutron star
>
> Hello Chia-Hui,
>
> > In addition , I would like to ask question about computation
> > consumption. For the BNS merger (using .pa
neutrino leakage with GRHydro (or
other thorns) ?
Thank you.
Best regards,
Chia-Hui
寄件者: Roland Haas
寄件日期: 2018年10月2日 下午 09:11:21
收件者: 林家暉
副本: Einstein Toolkit Users
主旨: Re: [Users] mass estimation of neutron star
Hello Chia-Hui,
> In addition , I would like
Hello Chia-Hui,
> In addition , I would like to ask question about computation
> consumption. For the BNS merger (using .par file in the gallery
> file), it costs about 5000 core hours (48 cores for 100 hours) for
> the completed simulation (to iteration=15000). Is it reasonable? And
> is there so
iteration=15000). Is it reasonable? And is there some way to save the
computational resources ?
Best regards,
Chia-Hui
寄件者: Roland Haas
寄件日期: 2018年9月27日 上午 05:37:02
收件者: 林家暉
副本: Einstein Toolkit Users
主旨: Re: [Users] mass estimation of neutron star
Hello Chia-Hui
Hello Chia-Hui,
> 1. It is GRMHD code so that it should be able to consider magnetic
> field. Is magnetic field considered in the gallery example of BNS?
> Because I did not see the relevant output data.
I do not think there is an explicit magnetised BNS example in the
gallery. There is a singl
Users
主旨: Re: [Users] mass estimation of neutron star
Dear Chia-Hui,
> To my understanding, "sum" output multiply dxdydz is the total mass
> of the neutron star(s) in the simulation. Is this correct ?
That is correct.
> In my case
> which is gallery example, initial sum = 0.000
Dear Chia-Hui,
> To my understanding, "sum" output multiply dxdydz is the total mass
> of the neutron star(s) in the simulation. Is this correct ?
That is correct.
> In my case
> which is gallery example, initial sum = 0.00012605 and final sum is
> 0.00012701 so that the mass increases from the
Chia-Hui
寄件者: Roland Haas
寄件日期: 2018年9月25日 上午 01:22:16
收件者: 林家暉
副本: Einstein Toolkit Users
主旨: Re: [Users] mass estimation of neutron star
Hello Chia-Hui,
> Thanks for your information. However I have further questions:
> 1.In your expression :\int \sqrt{\gamma} \rho W d^3x ,is t
Hello Chia-Hui,
> Thanks for your information. However I have further questions:
> 1.In your expression :\int \sqrt{\gamma} \rho W d^3x ,is the gamma Lorentz
> factor ? And what is W?
Uhm, gamma is the determinant of the three metric, W is the Lorentz
factor. The equation was for illustration onl
Re: [Users] mass estimation of neutron star
Hello Chia-Hui,
I am very sorry for the late response.
There are (at least) two notions of mass that are relevant for neutron
stars
1. the baryon mass which is the integral \int \sqrt{\gamma} \rho W d^3x
2. the ADM mass (or a similar object) which i
Hello Chia-Hui,
I am very sorry for the late response.
There are (at least) two notions of mass that are relevant for neutron
stars
1. the baryon mass which is the integral \int \sqrt{\gamma} \rho W d^3x
2. the ADM mass (or a similar object) which is the mass measured by an
observer far away
t
Dear whom it may concern,
I simulated the binary neutron star merger as in gallery
code(https://einsteintoolkit.org/gallery/bns/index.html). I tried to find out
the mass of the merged neutron star. For test, I calculated the initial mass of
each neutron star from the file rho.xy.h5 which is th
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