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Planck 2018 results: I. Overview and the cosmological legacy of Planck

N. Aghanim 1 Y. 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 10, 11 M. Bucher 12 C. Burigana R. C. Butler E. Calabrese J.-F. Cardoso 13 J. Carron 14 B. Casaponsa A. Challinor H. C. Chiang L. P. L. Colombo C. Combet 15, 16 D. Contreras B. P. Crill F. Cuttaia P. de Bernardis 17 G. de Zotti J. Delabrouille 12 J.-M. Delouis 4 F.-X. Désert 18 E. Di Valentino C. Dickinson J. M. Diego S. Donzelli O. Doré 19 M. Douspis 1 A. Ducout X. Dupac G. Efstathiou F. Elsner 20 T. A. Enßlin H. K. Eriksen E. Falgarone 21, 2 Y. Fantaye J. Fergusson R. Fernandez-Cobos F. Finelli F. Forastieri M. Frailis E. Franceschi A. Frolov 22 S. Galeotta S. Galli K. Ganga 12 R. T. Génova-Santos M. Gerbino T. Ghosh 1 J. González-Nuevo K. M. Górski 19 S. Gratton 23 A. Gruppuso J. E. Gudmundsson J. Hamann W. Handley F. K. Hansen G. Helou D. Herranz S. R. Hildebrandt E. Hivon 4 Z. Huang 24 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 21 M. Langer 1 A. Lasenby M. Lattanzi 25 C. R. Lawrence M. Le Jeune 12 J. P. Leahy J. Lesgourgues F. Levrier 21, 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 26 G. Maggio D. Maino N. Mandolesi A. Mangilli 3 A. Marcos-Caballero M. Maris P. G. Martin M. Martinelli E. Martínez-González S. Matarrese 27 N. Mauri J. D. Mcewen P. D. Meerburg 28 P. R. Meinhold A. Melchiorri 29 A. Mennella M. Migliaccio M. Millea S. Mitra M.-A. Miville-Deschênes 30 D. Molinari A. Moneti 4 L. Montier 3 G. Morgante A. Moss S. Mottet 4 M. Münchmeyer 31 P. Natoli H. U. Nørgaard-Nielsen C. A. Oxborrow L. Pagano 1 D. Paoletti B. Partridge G. Patanchon 12 T. J. Pearson M. Peel H. V. Peiris 32 F. Perrotta V. Pettorino 33 F. Piacentini L. Polastri G. Polenta J.-L. Puget 1 J. P. Rachen M. Reinecke M. Remazeilles 34 C. Renault 26 A. Renzi G. Rocha 19 C. Rosset 12 G. Roudier 21, 12 J. A. Rubiño-Martín B. Ruiz-Granados L. Salvati 1 M. Sandri 35 M. Savelainen D. Scott 36 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 37 T. Trombetti J. Valiviita B. van Tent 38 L. Vibert 1 P. Vielva F. Villa N. Vittorio B. D. Wandelt 4 I. K. Wehus M. White * S. D. M. White 39 A. Zacchei A. Zonca
* Corresponding author
2 Astrophysique
LPENS (UMR_8023) - Laboratoire de physique de l'ENS - ENS Paris
Abstract : 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.
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N. Aghanim, Y. 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, EDP Sciences, 2020, 641, pp.A1. ⟨10.1051/0004-6361/201833880⟩. ⟨cea-02936946⟩

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