[Mesa-users] Questions about RSP

[Jeremy Sakstein]

Thanks for the information Bill. I’ll look forward to the next release.

On Tue, Jul 16, 2019 at 4:10 PM Bill Paxton <paxton at kitp.ucsb.edu> wrote:

>
> On Jul 16, 2019, at 12:07 PM, Jeremy Sakstein <sakstein at sas.upenn.edu>
> wrote:
>
> Hi everyone,
>
> I'm playing around with the RSP test_suite cases and have two questions if
> that is okay:
>
> 1) In the pulsations paper it says that other hooks are still used. Does
> that include other_cgrav? In particular, is it used in e.g. equation (1)? I
> am trying to figure this out from the rsp files in star/private but it is
> not clear to me.
>
>
> rsp currently uses standard_cgrav, but in the next release it will start
> using cgrav(k) at point k, and that can be set by other_cgrav.
>
> 2) With regards to the new rsp quantities in the history file
> e.g. rsp_DeltaR and rsp_DeltaMag appear to be positive definite. At least
> when I plot them I only see positive values. Is this correct?
>
>
> you’ll find the following in rsp.f90.  LMAX and LMIN are the max and min
> luminosities during the most recent cycle.
>
>             s% rsp_DeltaMAG = 2.5d0*log10_cr(LMAX/LMIN)
> similarly for rsp_DeltaR where RMAX and RMIN are max and min during the
> most recent cycle.
>
>             s% rsp_DeltaR = RMAX-RMIN
>
>
> If so, I have been able to reproduce some figures in the paper showing the
> magnitude varying over one cycle  (e.g. fig 6) by simply picking a cycle
> and subtracting [image: -2.5\log(L_i)] where [image: L_i] is the input
> luminosity from my inlist. Is this the only way to do it or is there an
> internal variable I can plot.
>
> 3) Which quantity in the history_columns corresponds to the radial
> velocity plotted in the paper?
>
>
> rsp uses the variable v for radial velocities just as is done in the
> standard mesa/star with v_flag true.
>
> bill
>
>
>
>
>
> Cheers,
>
> Jeremy
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>
>
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