Browsing by Author "Arroja, F."

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    Planck 2018 results IX. Constraints on primordial non-Gaussianity
    (EDP Sciences, 2020) Ballardini, M.; Akrami, Y.; Arroja, F.
    We analyse the Planck full-mission cosmic microwave background (CMB) temperature and E-mode polarization maps to obtain constraints on primordial non-Gaussianity (NG). We compare estimates obtained from separable template-fitting, binned, and optimal modal bispectrum estimators, finding consistent values for the local, equilateral, and orthogonal bispectrum amplitudes. Our combined temperature and polarization analysis produces the following final results: fNLlocal = −0.9 ± 5.1; fNLequil = −26 ± 47; and fNLortho = −38 ± 24 (68% CL, statistical).