Search found 7 matches

by benfernando
Tue Aug 13, 2019 12:03 pm
Forum: General Discussion
Topic: diff_scheme, Growth Rate and Amplitudes
Replies: 6
Views: 6597

Re: diff_scheme, Growth Rate and Amplitudes

Hi all, Sorry to post again on an old topic but I've managed to get myself a bit confused about point 3 - the signs of eta and Im(sigma). I note that eta is defined in Stellingwerf 1978, such that eta > 0 is unstable and eta <0 is stable. I've also seen the definition above used, where eta = - Im(si...
by benfernando
Wed Apr 24, 2019 1:21 pm
Forum: Bug reports
Topic: Nonadiabatic computation of mixed modes
Replies: 4
Views: 6473

Re: Nonadiabatic computation of mixed modes

Hi Jacqueline,

Thanks very much for your reply - I look forward to the new release!

Best
Ben
by benfernando
Mon Apr 01, 2019 11:15 am
Forum: Bug reports
Topic: Nonadiabatic computation of mixed modes
Replies: 4
Views: 6473

Re: Nonadiabatic computation of mixed modes

As requested: initial model (which I inherited), an example inlist (I've tried uncommenting the last two lines of &controls to change the grid), and the final model from which I take the pulsation data. Thanks!
by benfernando
Wed Mar 27, 2019 11:21 am
Forum: Bug reports
Topic: Nonadiabatic computation of mixed modes
Replies: 4
Views: 6473

Nonadiabatic computation of mixed modes

Hi all, I'm looking at whether non-adiabatic effects are important in a particular class of helium core-burning stars. In the adiabatic case the calculations look fine, but in the non-adiabatic case I get very small chi values (~1e-20) and in some cases, non-monotonic mode orders. I understand that ...
by benfernando
Thu Feb 07, 2019 12:57 pm
Forum: General Discussion
Topic: Mode observability
Replies: 0
Views: 8216

Mode observability

Hi all, My apologies for what I'm sure is probably quite a naive question. I'm modelling the oscillation modes of a Main Sequence A-type star and trying to understand which of these modes is likely to be observable. Of course, I restrict this to l = 0,1,2 for geometric cancellation reasons, but am t...
by benfernando
Tue Jun 19, 2018 6:45 am
Forum: General Discussion
Topic: Imaginary part of frequency for SBPs
Replies: 2
Views: 3967

Re: Imaginary part of frequency for SBPs

Hi Rich,

Great, that has indeed fixed it!

Much appreciated.

Ben
by benfernando
Mon Jun 18, 2018 10:50 am
Forum: General Discussion
Topic: Imaginary part of frequency for SBPs
Replies: 2
Views: 3967

Imaginary part of frequency for SBPs

Hi, I'm new to GYRE and am running through the relevant MESA summer school modules (here, Gautschy 2016, labelled "PLS1" in http://cococubed.asu.edu/mesa_market/ewExternalFiles/2016_gautschy.zip). I've updated the inlists as needed and am getting things to run properly, but I notice that all the ima...