[mesa-users] LS

[Martin C.]

Yea it definitely looks wrong to me.

I ran two binary models with the wrong and corrected versions of jdot_ls,
with
-primary 40 Msun
-secondary as point mass, 27 Msun
-initial period 1.8 days
-Z = 0.014
until RLOF.
The only jdot I have enabled is LS.
Also I have do_tidal_sync = .true. !default false

Plotting the primary, I got (I hope the figures display in mailing list
emails)
[image: Inline image 1]

Recall that in MESA 8118 the J_total history output is wrong, so have to
correct it manually.
I don't think J_total should increase here.
[image: Inline image 2]

[image: Inline image 3]
[image: Inline image 4]

[image: Inline image 5]


And interestingly
[image: Inline image 6]
any idea what that's about?



thanks!
Martin




On Wed, Aug 10, 2016 at 10:31 PM, Pablo Marchant <pamarca at gmail.com> wrote:

> Hi Martin. I think you're right, thanks for reporting this.
>
> Let me check some things and I'll get back to you,
>
> On Wed, Aug 10, 2016 at 1:58 AM, Martin C. <martincs14 at gmail.com> wrote:
>
>> Hi all,
>>
>> Forgive me if I'm confused here, but I've convinced myself that equation
>> 7 in MESA paper 3 has some wrong signs:
>>
>> [image: Inline image 1]
>>
>> deltaS are changes while S_lost are absolute amounts it seems (positive).
>> So if the only change in spin AM is due to mass loss, my understanding is
>> that Jdot_ls should be zero, but with this equation it wouldn't be ?
>>
>> The code is faithful to the equation as far as I can tell in
>> binary_jdot.f90
>> [image: Inline image 1]
>> b% s_donor% angular_momentum_removed is a positive quantity when I print
>> it.
>>
>> thanks for any clarification,
>>
>> Martin
>>
>> --
>> Martin C.
>>
>> ------------------------------------------------------------
>> ------------------
>> What NetFlow Analyzer can do for you? Monitors network bandwidth and
>> traffic
>> patterns at an interface-level. Reveals which users, apps, and protocols
>> are
>> consuming the most bandwidth. Provides multi-vendor support for NetFlow,
>> J-Flow, sFlow and other flows. Make informed decisions using capacity
>> planning reports. http://sdm.link/zohodev2dev
>> _______________________________________________
>> mesa-users mailing list
>> mesa-users at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/mesa-users
>>
>>
>
>
> --
> Pablo Marchant Campos
> M.Sc on Astrophysics, Universidad Católica de Chile
> PhD student, Argelander-Institut für Astronomie
>



-- 
Martin C.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 51545 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 46988 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment-0001.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 39541 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 47553 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment-0003.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 38098 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment-0004.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 40197 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment-0005.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 56274 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment-0006.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 44719 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20160812/5b0935e7/attachment-0007.png>