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StellarEvolutionNeutrinoTests

Code to use a modified MESA stellar evolution code to test the expected luminosity of the TRGB after introducing Neutrino Magnetic Dipole Moments to the star. The repo is organized as follows:

  • mesa_mod/mesa-r12778/star/test_suite/NeutrinoMagneticDipoleMesa/ is the directory with the MESA modifications, scripts to run the grid of models, and first post processing pipeline script.
  • ML_models has all of the machine learning code to train and use the models
  • analysis holds plotting code to create figures for papers and presentations. Additionally, the output_analysis subdirectory has code to merge post processing outputs.
  • makeGrids has scripts to create the different input grid files to run MESA on.
  • mcmc has the scripts and plots for the MCMC analysis.

Installing MESA

These steps follow from: https://docs.mesastar.org/en/release-r22.05.1/installation.html#download-mesa. Here are some additional notes to ensure you are installing the same version of MESA used for this project:

  1. Install the MESA SDK from this link: http://user.astro.wisc.edu/~townsend/static.php?ref=mesasdk. You want to download the file with version mesasdk-x86_64-macos-gcc9-21.9.1.pkg.
  2. You can then install MESA version 12778 from the older releases link here: https://zenodo.org/record/6547951#.Y0dp30zMJD8

Then, you should place MESA in the mesa_mod subdirectory and put the mesa_mod/mesa-r12778/star/test_suite/NeutrinoMagneticDipoleMesa/ directory in that path within the MESA installation. This should allow you to run the inlists and scripts as is in that directory!

Versions Used

python version 3.8, NumPy version 1.22.3, Pandas version 1.4.3, Matplotlib version 3.5.1, Seaborn version 0.11.2, Tensorflow version 2.4.1, corner version 2.2.1, emcee version 3.1.2.