AAS Journals
Published January 16, 2025 | Version v0.2
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adivijaykumar/standard-eccentricity-scripts: v0.2

Creators

  • 1. Canadian Institute for Theoretical Astrophysics

Description

Code used in the paper "Consistent eccentricities for gravitational wave astronomy: Resolving discrepancies between astrophysical simulations and waveform models". Main github repository is here https://github.com/adivijaykumar/standard-eccentricity-scripts.

See also https://zenodo.org/doi/10.5281/zenodo.10633004. Please cite the paper (https://ui.adsabs.harvard.edu/abs/2024arXiv240207892V/abstract) if you use this in a publication or any other scientific work.

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UPDATE v0.2: Fixes a bug pointed out by Isobel Romero-Shaw. The issue was confusion betweeen classic det-frame/source-frame masses conversion. Basically, the redshift shouldn't have been used anywhere except while extracting the eccentricity at a specified frequency.

To reiterate, the general algorithm is:

  1. Use the source frame quantities (initial separation, initial eccentricity, masses) to get the e vs f curve. Interpolate this curve.
  2. If you want to extract e at fixed (det frame) f22, evaluate the interpolant at f22 * (1 + redshift)
  3. f instead you want e at fixed M * f22, then evaluate the interpolant at M_times_f22 / Mtot_src

Thanks to Isobel for pointing this out!

Full Changelog: https://github.com/adivijaykumar/standard-eccentricity-scripts/compare/v0.1...v0.2

 

 

Files

adivijaykumar/standard-eccentricity-scripts-v0.2.zip

Files (5.5 kB)

Additional details

Related works

Is supplement to
Software: https://github.com/adivijaykumar/standard-eccentricity-scripts/tree/v0.2 (URL)

Software

Repository URL
https://github.com/adivijaykumar/standard-eccentricity-scripts