Planck 2015 results
Free Access

Fig. 50


68% and 95% CL constraints on the primordial adiabatic spectral index nℛℛ and the primordial tensor-to-scalar ratio r (more accurately, in the CDI+r model, the primordial tensor-to-curvature power ratio) at k = 0.002 Mpc-1. Filled contours are for generally-correlated ADI+CDI and solid contours for the pure adiabatic model.

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