Cosmological parameters derived from the final Planck data release (PR4)

We present cosmological parameter constraints using maps from the last Planck data release (PR4). In particular, we detail an upgraded version of the cosmic microwave background likelihood, HiLLiPoP , that is based on angular power spectra and relies on a physical modeling of the foreground residuals in the spectral domain. This new version of the likelihood retains a larger sky fraction (up to 75%) and uses an extended multipole range. Using this likelihood, along with low- ℓ measurements from LoLLiPoP , we derived constraints on ΛCDM parameters that are in good agreement with previous Planck 2018 results, but with smaller uncertainties by 10% to 20%. We demonstrate that the foregrounds can be accurately…

• NA
  National Aeronautics and Space Administration
• ES
  European Space Agency
• EC
  European Commission

  Award: 788212
• CN
  Centre National de la Recherche Scientifique

  Award: CNRS/IN2P3
• AD
  Alliance de recherche numérique du Canada
• IN
  Institut National de Physique Nucléaire et de Physique des Particules

  Award: CNRS/IN2P3