Planck 2018 results
Open Access

Fig. 5.


68% and 95% CL constraints on tensor perturbations in the ΛCDM+r0.002 + r0.02 model, i.e., when the inflationary consistency relation is relaxed. Filled contours in the left panel show the results for our independent primary parameters r0.002 and r0.02, which have uniform priors, and in the right panel for the derived parameters nt and r0.01, which have non-uniform priors. The dotted lines assume uniform priors on r0.01 and nt, calculated as in Fig. 4. The scale k = 0.01 Mpc−1 is near the decorrelation scale of (nt, r) for the Planck+BK15 data. In both panels the dashed black line indicates the inflationary consistency condition, nt = −r0.01/8. (The grey contours follow if we use the older BK14 data instead of the BK15 data.)

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