POSYDON-code / POSYDON-code/POSYDON

[BUG]: ECSN h1 / he4 ejecta == NaN

Open
#914 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

discuss
Dominant language
Python
Stars
45
Forks
37
Avg merge
8d 20h
Merged PRs (30d)
5

Description

Describe the bug
There are several models in populations where a stripped helium star going through an ECSN give h1_ejecta and he4_ejecta = NaN. This is while the star does have a helium shell! Either we don't have an ejecta or something weird is going on with our calculation.

Example: binary 13 in the SN_lab1.h5 file. This is an interpolator run. This could be a results from the interpolator or the actual collapse code.

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the NaN values for binary 13 in the SN_lab1.h5 interpolator results, focusing on h1_ejecta and he4_ejecta for the stripped helium star ECSN case. Trace the result through the interpolator and collapse calculation to determine whether the ejecta are absent or the calculation produces NaN. Done means identifying the source and ensuring the ejecta values correctly represent the helium shell.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
48/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.