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

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 
* Corresponding author
2 Astrophysique
LPENS - 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, 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, EDP Sciences, 2020, 641, pp.A1. ⟨10.1051/0004-6361/201833880⟩. ⟨cea-02936946⟩

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