Uncertainty estimation of the 21cm–galaxy cross-correlation.
21cm_gal_uncertainties is a code designed to estimate uncertainties of the 21cm–galaxy cross-correlation signal for realistic forecasts of the signal detection and reionisation constraints depending on galaxy survey and 21cm experimental setups.
Uncertainties include:
- 21cm instrumental noise (based on antennae files provided in 21cm_gal_uncertainties/input for the SKA)
- 21cm foreground wedge assumption
- redshift uncertainty of galaxy survey
- limiting luminosity of galaxy surveys
- survey FoVs
Please cite: arXiv:2509.15906
To estimate the uncertainty for a given survey and signal setup as specified in iniFile.ini run:
python src/main.py iniFile.ini
Different do_calculations bash-files provide further examples of usage, called as: ./do_calculations
Codes to produce the plots from the paper can be found in 21cm_gal_uncertainties/plots.