CMB power spectra

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The main product to express cosmological constraints imposed by Planck data is a likelihood code. One of its by-products is the derived maximum-likelihood CMBCosmic Microwave background spectrum, which is available for plotting purposes; see product section.

The likelihood code itself was released together with the corresponding "CMBCosmic Microwave background power spectra and likelihood" paper (Planck-2015-A11[1]). A short summary of the approach (similar to that used in 2013) is also available in the 2015 release parameters paper (Planck-2015-A13[2]).


  1. Planck 2015 results. XI. CMB power spectra, likelihoods, and robustness of cosmological parameters, Planck Collaboration, 2016, A&A, 594, A11.
  2. Planck 2015 results. XIII. Cosmological parameters, Planck Collaboration, 2016, A&A, 594, A13.