[Mesa-users] Magnetic field with MESA

[Pablo Marchant]

And also a warning, the magnetic field reported there corresponds to that
produced by the Spruit-Tayler dynamo

http://adsabs.harvard.edu/abs/2002A%26A...381..923S

which operates in radiative regions of the star. From your message I deduce
you're looking for something closer to the solar dynamo, which MESA does
not include. If this is the case you will need to calculate yourself the
magnetic field strength using a dynamo model that you consider appropriate.

Cheers

On Mon, Oct 23, 2017 at 1:52 PM, Francis Timmes via Mesa-users <
mesa-users at lists.mesastar.org> wrote:

> a search of $MESA_DIR/star/defaults/profile_columns.list
> suggests that putting
>
>    dynamo_log_B_r   ! (Gauss)
>    dynamo_log_B_phi ! (Gauss)
>
> will put the magnetic field info in the profiles.
>
> fxt
>
>
>
>
> > On Oct 23, 2017, at 11:27 AM, Alberto Rojo Cid via Mesa-users <
> mesa-users at lists.mesastar.org> wrote:
> >
> > Hello everybody,
> >
> > I am doing a study on the rotation in M type stars with MESA, and I get
> the following doubt that I am not able to resolve: I want to observe the
> effect of the magnetic field during the evolution of the star and I dont
> know if MESA calculates the magnetic field a from the speed of rotation and
> the internal conditions of the star, or a certain value must be included
> through a condition that I am not able to find. For the case of the
> magnetic field, I think it is included following the Spruit-Tayler dynamo
> model (see MESA Paxton article et al. 2013, section 6.2) that corresponds
> to the option “am_nu_ST” of the inlist_project file, but I hoped that
> someone could confirm me this. I would also like to know if there is any
> way to obtain the value of the magnetic field in the output files.
> >
> > Im running MESA 9575 with Ubuntu 16.04(64 bit)
> >
> > Thank you in advance to everyone for your help.
> > Greetings,
> > Alberto Rojo.
> >
> >       Libre de virus. www.avast.com
>
>


-- 
Pablo Marchant Campos
M.Sc on Astrophysics, Universidad Católica de Chile
PhD on Astrophysics, Argelander-Institut für Astronomie, Universität Bonn
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