[Users] Oscillations in total angular momentum from QuasiLocalMeasures

[Erik Schnetter]

Sudipta

What is the size of the simulation domain?
At which radius do you evaluate the angular momentum?
What is the spatial resolution there?
What is the time resolution there?
Is there any matter nearby?
What happens if you change the evaluation radius? What if you make it
smaller or larger?
How close is this to the outer boundary?
Do you have a visualisation of the geometry (e.g. the imaginary part
of the Weyl scalar Psi_2)?
In which direction does the angular momentum point?
Does this change over time?
What is the magnitude of the angular momentum? How does this compare
to the mass?

-erik


On Tue, Mar 19, 2024 at 9:35 AM Sudipta Hensh <hensh at astro-osaka.jp> wrote:
>
> Dear all,
>
> I hope this email finds you well.
>
> I am performing simulations of BNS mergers and utilizing the QuasiLocalMeasures thorn to plot the total angular momentum of the spacetime. However, I have noticed high-frequency oscillations in the plotted data, as shown in the attached plot. I was wondering if we should expect such oscillations. I would also like to know the reason behind such oscillations. I would appreciate if you kindly help me to understand this issue.
>
> I am looking forward to hearing from you. Many thanks in advance!
>
> Regards,
> Sudipta Hensh
> JSPS Postdoctoral Researcher
> Pronouns: He/Him
> Graduate School of Science
> Osaka University
> 1-1 Machikaneyama-cho, Toyonaka
> Osaka 560-0043, Japan
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-- 
Erik Schnetter <schnetter at gmail.com>
http://www.perimeterinstitute.ca/personal/eschnetter/