[Mesa-users] Opacity discontinuity

[Pablo Marchant]

Hi michael,

Plenty of changes have been made to the calculation of opacities since the
last version, in part to address problems like the one you have. Could you
try out the latest development version 10368 and see if your problem
persists?

Cheers

On Fri, Mar 9, 2018, 4:59 PM Zhang, Zhaoxi M. (Michael) <
mz at astro.caltech.edu> wrote:

> Hello MESA users,
>
>
> I'm using OP opacities to model a white dwarf, and getting discontinuities
> in the opacity (see plot).  The opacity suddenly drops from 20 to 2 within
> a single grid cell before climbing back up, all within a very narrow
> log(1-q) range.  These discontinuities are wreaking havoc on the timestep,
> as the structure around the discontinuities is forced to change on a very
> small timescale.
>
>
> Does anyone know what might be causing these discontinuities around T=6960
> and rho=2.3e-6?  I don't get any errors from OP.  I'm diving into the
> tables, but thought that I should ask here before diving too deep.
>
>
>
> Cheers,
>
>
> Michael
>
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>
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