Planck 2018 results

N. Aghanim (1) , Yashar Akrami (2) , F. Arroja , M. Ashdown , J. Aumont , C. Baccigalupi , M. Ballardini , A. J. Banday (3) , R. B. Barreiro , N. Bartolo , S. Basak , R. Battye , K. Benabed (4) , J.-P. Bernard , M. Bersanelli (5) , P. Bielewicz , J. J. Bock (6) , J. R. Bond (7) , J. Borrill (8) , F. R. Bouchet (9) , F. Boulanger , M. Bucher (10) , C. Burigana , R. C. Butler , E. Calabrese , J.-F. Cardoso (11) , J. Carron (12) , B. Casaponsa , A. Challinor , H. C. Chiang , L. P. L. Colombo , C. Combet (13, 14) , D. Contreras , B. P. Crill , F. Cuttaia , P. de Bernardis (15) , G. de Zotti , J. Delabrouille (10) , J.-M. Delouis (4) , F.-X. Désert (16) , E. Di Valentino , C. Dickinson , J. M. Diego , S. Donzelli , O. Doré (17) , M. Douspis (1) , A. Ducout , X. Dupac , G. Efstathiou , F. Elsner (18) , T. A. Ensslin , H. K. Eriksen , E. Falgarone (19, 2) , Y. Fantaye , J. Fergusson , R. Fernandez-Cobos , F. Finelli , F. Forastieri , M. Frailis , E. Franceschi , A. Frolov (20) , S. Galeotta , S. Galli , K. Ganga (10) , R. T. Génova-Santos , M. Gerbino , T. Ghosh (1) , J. González-Nuevo , K. M. Górski (17) , Steven Gratton , A. Gruppuso , J. E. Gudmundsson , J. Hamann , W. Handley , F. K. Hansen , G. Helou , D. Herranz , S. R. Hildebrandt , E. Hivon (4) , Z. Huang (21) , A. H. Jaffe , W. C. Jones , A. Karakci , E. Keihänen , R. Keskitalo , K. Kiiveri , J. Kim , T. S. Kisner (8) , L. Knox , N. Krachmalnicoff , M. Kunz , H. Kurki-Suonio , G. Lagache (1) , J.-M. Lamarre (19) , M. Langer (1) , A. Lasenby , M. Lattanzi (22) , C. R. Lawrence , M. Le Jeune (10) , J. P. Leahy , J. Lesgourgues , F. Levrier (19, 2) , A. Lewis , M. Liguori , P. B. Lilje , M. Lilley (4) , V. Lindholm , M. López-Caniego , P. M. Lubin , Y.-Z. Ma , J. F. Macías-Pérez (23) , G. Maggio , D. Maino , N. Mandolesi , A. Mangilli (3) , A. Marcos-Caballero , M. Maris , P. G. Martin , M. Martinelli , E. Martínez-González , S. Matarrese (24) , N. Mauri , J. D. Mcewen , P. D. Meerburg (25) , P. R. Meinhold , A. Melchiorri (26) , A. Mennella , M. Migliaccio , M. Millea , S. Mitra , M.-A. Miville-Deschênes (27) , D. Molinari , A. Moneti (4) , L. Montier (3) , G. Morgante , A. Moss , S. Mottet (4) , M. Münchmeyer , P. Natoli , H. U. Nørgaard-Nielsen , C. A. Oxborrow , L. Pagano (1) , D. Paoletti , B. Partridge , G. Patanchon (10) , T. J. Pearson , M. Peel , H. V. Peiris (28) , F. Perrotta , V. Pettorino (29) , F. Piacentini , L. Polastri , G. Polenta , J.-L. Puget (1) , J. P. Rachen , M. Reinecke , M. Remazeilles (30) , C. Renault (23) , A. Renzi , G. Rocha (17) , C. Rosset (10) , G. Roudier (19, 10) , J. A. Rubiño-Martín , B. Ruiz-Granados , L. Salvati (1) , M. Sandri (31) , M. Savelainen , D. Scott (32) , E. P. S. Shellard , M. Shiraishi , C. Sirignano , G. Sirri , L. D. Spencer , R. Sunyaev , A.-S. Suur-Uski , J. A. Tauber , D. Tavagnacco , M. Tenti , L. Terenzi , L. Toffolatti , M. Tomasi (33) , T. Trombetti , J. Valiviita , B. van Tent (34) , L. Vibert (1) , P. Vielva , Francesca Villa , N. Vittorio , B. D. Wandelt (4) , I. K. Wehus , M. White , S. D. M. White (35) , A. Zacchei , A. Zonca

1 IAS - Institut d'astrophysique spatiale
2 Astrophysique
3 IRAP - Institut de recherche en astrophysique et planétologie
4 IAP - Institut d'Astrophysique de Paris
5 UNIPR - Università degli studi di Parma = University of Parma
6 Computing and Mathematical Sciences [Pasadena]]
7 CITA - Canadian Institute for Theoretical Astrophysics
8 LBNL - Lawrence Berkeley National Laboratory [Berkeley]
9 PLH - Patrimoine, Littérature, Histoire
10 APC (UMR_7164) - AstroParticule et Cosmologie
11 Universidade Aberta [Lisboa]
12 CNES - Centre National d'Études Spatiales [Toulouse]
13 UNICANCER/CRCL - Centre de Recherche en Cancérologie de Lyon
14 Centre Léon Bérard [Lyon]
15 Dipartimento di Fisica [Roma La Sapienza]
16 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
17 JPL - Jet Propulsion Laboratory
18 IAP - Institut d'Astrophysique de Paris
19 LERMA (UMR_8112) - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique
20 Laboratory for Phytosanitary Diagnostics and Forecasts, All-Russian Institute for Plant Protection
21 AOSS - Department of Atmospheric, Oceanic, and Space Sciences [Ann Arbor]
22 ICRA and Physics Department
23 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
24 Dipartimento di Fisica "G. Galilei"
25 CAM - University of Cambridge [UK]
26 UNIROMA - Università degli Studi di Roma "La Sapienza" = Sapienza University [Rome]
27 CEA - Commissariat à l'énergie atomique et aux énergies alternatives
28 UCL - University College of London [London]
29 AIM (UMR_7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
30 University of Manchester [Manchester]
31 VIMM - Venetian Institute Molecular Medicine
32 UBC - University of British Columbia
33 NBCM - Laboratoire de neurobiologie cellulaire et moléculaire
34 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
35 USDA-ARS : Agricultural Research Service

The European Space Agency’s Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 and 23 October 2013, producing deep, high-resolution, all-sky maps in nine frequency bands from 30 to 857 GHz. This paper presents the cosmological legacy of Planck, which currently provides our strongest constraints on the parameters of the standard cosmological model and some of the tightest limits available on deviations from that model. The 6-parameter ΛCDM model continues to provide an excellent fit to the cosmic microwave background data at high and low redshift, describing the cosmological information in over a billion map pixels with just six parameters. With 18 peaks in the temperature and polarization angular power spectra constrained well, Planck measures five of the six parameters to better than 1% (simultaneously), with the best-determined parameter (θ*) now known to 0.03%. We describe the multi-component sky as seen by Planck, the success of the ΛCDM model, and the connection to lower-redshift probes of structure formation. We also give a comprehensive summary of the major changes introduced in this 2018 release. The Planck data, alone and in combination with other probes, provide stringent constraints on our models of the early Universe and the large-scale structure within which all astrophysical objects form and evolve. We discuss some lessons learned from the Planck mission, and highlight areas ripe for further experimental advances.

Keywords: cosmology: observations; cosmology: theory; cosmic background radiation; surveys

Domains: Physics [physics]; Astrophysics [astro-ph]

N. Aghanim, Yashar Akrami, F. Arroja, M. Ashdown, J. Aumont, et al.. Planck 2018 results: I. Overview and the cosmological legacy of Planck. Astronomy and Astrophysics - A&A, 2020, 641, pp.A1. ⟨10.1051/0004-6361/201833880⟩. ⟨cea-02936946⟩