CMB Harmonic Analysis with Robust Multi-field Likelihood (CHARM-Like)

CHARM-Like is a package that performs an angular power spectrum-based CMB analysis in a multi-field scenario.

Starting from a set of $N$ Gaussian correlated fields (T, E, B, frequency channels, or data splits), it computes the posterior on the optical depth $\tau$ and the tensor-to-scalar ratio $r$.

CHARM-Like is used to obtain the results of Galloni et al. (2025), so refer to that work for further details on the methodology.

For details on how to run the code, see the default configuration file.