[Mesa-users] Stellar rotation

[Viviana Beatríz Bolzicco]

Thank you Jared. for your answer.
I would like to know what approximation or theory do MESA use for  rotation
in a star with many radiative zones. Is there any module?

Thank you

Viviana

On Tue, Sep 17, 2024, 14:58 Jared Goldberg <jgoldberg at flatironinstitute.org>
wrote:

> MESA is able to handle many radiative and convective zones, as it locally
> checks whether the zone should be radiative or convective at every zone in
> the model.
>
> To do this, MESA calculates the Schwartzschild or Ledoux criterion (see
> documentation
> <https://docs.mesastar.org/en/latest/reference/controls.html#use-ledoux-criterion>
> for turning this on) for convective instability in each shell in the model.
> This is a local condition, so MESA may calculate many radiative and
> convective layers, and switches energy transport between them. Typically
> MESA implements convection via Mixing Length Theory (See e.g. review by Joyce
> & Tayar <https://ui.adsabs.harvard.edu/abs/2023Galax..11...75J/abstract>),
> with the added capability of doing time-dependent convection (described
> in MESA VI
> <https://ui.adsabs.harvard.edu/abs/2023ApJS..265...15J/abstract>).
>
> For an example of a star with many layers (convective cores and shells and
> radiative zones too and a convective envelope), see e.g. the
> $MESA_DIR/star/test_suite/12M_pre_ms_to_core_collapse/ case in the
> test_suite, which takes a star to core-collapse which develops many layers
> of radiation and convection in between.
>
> The rest will depend on the science case you have in mind -- what kind of
> star do you have in mind? What are you trying to learn about it?
>
> ~Jared
>
> On Tue, Sep 17, 2024 at 12:52 PM Viviana Beatríz Bolzicco via Mesa-users <
> mesa-users at lists.mesastar.org> wrote:
>
>> Dear all
>>
>> I'm just beginning to use MESA and I'm reading Bill Paxton et al (2013)'s
>> Modules for experiments in stellar astrophysics (MESA): Planets,
>> Oscillations, Rotation, and Massive stars.
>> I'm interested to know how you resolve the problem of a star with more
>> than one radiative zone.
>>
>> Regards
>>
>>  Viviana B. Bolzicco
>> _______________________________________________
>> mesa-users at lists.mesastar.org
>> https://lists.mesastar.org/mailman/listinfo/mesa-users
>>
>>
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