Planck 2015 results
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Fig. 26


Bayesian reconstruction of the primordial power spectrum averaged over different values of Nint (as shown in Fig. 24), weighted according to the Bayesian evidence. The region 30 << 2300 is highly constrained, but the resolution is lacking to say anything precise about higher . At lower , cosmic variance reduces our knowledge of The weights assigned to the lower Nint models outweigh those of the higher models, so no oscillatory features are visible here.

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