Planck 2018 results. IX. Constraints on primordial non-Gaussianity

@article{Akrami2019Planck2R,
  title={Planck 2018 results. IX. Constraints on primordial non-Gaussianity},
  author={Planck Collaboration Y. Akrami and Frederico M. A. Arroja and Mark Ashdown and J. Aumont and Carlo Baccigalupi and Mario Ballardini and Anthony J. Banday and Rita Bel{\'e}n Barreiro and Nicola Bartolo and Soumen Basak and Karim Benabed and J-Ph. Bernard and M. Bersanelli and Pawel Bielewicz and J. Richard Bond and Julian Borrill and Francois R. Bouchet and Manfred Bucher and Carlo Burigana and R. C. Butler and Erminia Calabrese and Jean-François Cardoso and B. Casaponsa and Anthony Challinor and H. C. Chiang and Loris P. L. Colombo and C{\'e}line Combet and Brendan P. Crill and F. Cuttaia and Paolo Bernardis and Adriano de Rosa and Gianfranco De Zotti and Jacques Delabrouille and J. M. Delouis and Eleonora Di Valentino and Jose M. Diego and Olivier Dor'e and Marian Douspis and Anne Ducout and Xavier Dupac and Stefano Dusini and George P. Efstathiou and Franz Elsner and Torsten A. Ensslin and Hans Kristian Eriksen and Yabebal T. Fantaye and J. R. Fergusson and Ra{\'u}l Fern{\'a}ndez-Cobos and Fabio Finelli and Marco Frailis and Aur'elien A. Fraisse and Enrico Franceschi and Andrei V. Frolov and S. Galeotta and Ken Ganga and Ricardo T. G'enova-Santos and Martina Gerbino and Joaquin Gonz'alez-Nuevo and Krzysztof M. G'orski and Steven Gratton and Alessandro Gruppuso and Jon E. Gudmundsson and Jan Hamann and Will Handley and F. K. Hansen and Diego Herranz and Eric Hivon and Z. Huang and Andrew H. Jaffe and William C. Jones and Gabriel Jung and Elina Keihanen and Reijo Keskitalo and Kimmo Kiiveri and J. Kim and Nicoletta Krachmalnicoff and Martin Kunz and Hannu Kurki-Suonio and J-M. Lamarre and Anthony N. Lasenby and Massimiliano Lattanzi and Charles R. Lawrence and Maude Le Jeune and François L{\'e}vrier and A. M. Lewis and Michele Liguori and Per B. Lilje and V. Lindholm and Marcos L'opez-Caniego and Y.-Z. Ma and Juan-Fancisco Mac'ias-P'erez and Gianmarco Maggio and Davide Maino and Nazzareno Mandolesi and Airam Marcos-Caballero and Michele Maris and P. G. Martin and E. Mart'inez-Gonz'alez and Sabino Matarrese and Nicoletta Mauri and Jason D. McEwen and Pieter Daniel Meerburg and Peter Meinhold and Alessandro Melchiorri and Aniello Mennella and Marina Migliaccio and Marc-Antoine Miville-Desch{\^e}nes and Diego Molinari and Andrea Moneti and Laurent Montier and G. Morgante and Adam Moss and Moritz Munchmeyer and Paolo Natoli and Filippo Oppizzi and Luca Pagano and Daniela Paoletti and Bruce Partridge and Guillaume Patanchon and F. Perrotta and Valeria Pettorino and Francesco Piacentini and Gianluca Polenta and J-L. Puget and Jorg P. Rachen and Ben Racine and Martin Reinecke and Mathieu Remazeilles and Alessandro Renzi and Graca M. Rocha and Jos'e Alberto Rubino-Mart'in and Beatriz Ruiz-Granados and Laura Salvati and Matti Savelainen and Douglas Scott and E. P. S. Shellard and Maresuke Shiraishi and C. Sirignano and G. Sirri and K. Smith and Locke D Spencer and L. Stanco and Rashid Sunyaev and A.-S. Suur-Uski and Jan Tauber and Daniele Tavagnacco and M. Tenti and Luigi Toffolatti and Maurizio Tomasi and Tiziana Trombetti and Jussi Valiviita and Bartjan van Tent and Patricio Vielva and Fabrizio Villa and Nicola Vittorio and Benjamin D. Wandelt and Ingunn Kathrine Wehus and Andrea Zacchei and Andrea Zonca},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  year={2019}
}
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 modal bispectrum estimators, finding consistent values for the local, equilateral, and orthogonal bispectrum amplitudes. Our combined temperature and polarization analysis produces the following results: f_NL^local = -0.9 +\- 5.1; f_NL^equil = -26 +\- 47… 
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