Planck 2015 results
Free Access

Fig. 27


Filters used to optimize constraints on local NG, in harmonic space. The temperature filter WM is a smoothed version of the true Wiener filter obtained with realistic models, while the E-mode WM filter is adapted from the temperature one, with a cutoff value at ≃ 800. The formulae for the derivative filters are given in Eq. (78).

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