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Optical Depth, Reionization of the Universe and Neutrino Masses

This is the repo for the "Optical Depth, Reionization of the Universe and Neutrino Masses" projet paper.

Likelihood description

  • Planck: Planck data are spread into three different likelihoods following the original version of the Planck likelihoods.

    • Planck lowT: likelihood based on the PR3 low-ℓ TT posterior distributions of measured $C_\ell$ fitted with a Wishart ($\alpha_\ell, \beta_\ell$). We then rescaled to the mock fiducial model with $\beta_\ell \longrightarrow \beta_\ell^{\rm mock} = (\alpha_\ell+1)C_{\ell,{\rm mock}}^{TT}$. Multipole range available $\ell \in [2,29]$.

    • Planck lowE: Hamimeche&Lewis approximation using the Planck PR4 covariance matrix (LoLLiPoP) evaluated at the mock fiducial spectrum. Multipole range available $\ell \in [2,29]$.

    • Planck high-ℓ (TT,TE,EE): Gaussian likelihood for TT , TE and EE power spectra, with the full covariance matrix from the PR3 Planck-lite likelihood (marginalised over foreground parameters). Multipole range available $\ell \in [30,2508]$.

  • LiteBIRD: Wishart likelihood for TT , TE, and EE spectra, using beam-deconvolved noise spectra including foreground residuals after ILC and an effective sky fraction fsky ∈ {0.7, 0.8} from E-mode group. Multipole range available $\ell \in [2,2500]$.

  • Simons-Observatory: Wishart likelihood with noise curves including foreground residuals. Multipole range available $\ell \in [127,7979]$.

  • CMB-S4: Wishart likelihood with noise curves including foreground residuals. Multipole range available $\ell \in [127,10000]$.

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Repository for the reionization project paper

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