Planck 2013 results. XVI. Cosmological parameters

• Published in: Astronomy & Astrophysics
• Main Authors: Ade, PAR, Aghanim, N, Armitage-Caplan, C, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Banday, AJ, Barreiro, RB, Bartlett, JG, Battaner, E, Benabed, K, Benoit, A, Benoit-Levy, A, Bernard, J-P, Bersanelli, M, Bielewicz, P, Bobin, J, Bock, JJ, Bonaldi, A, Bond, JR, Borrill, J, Bouchet, FR, Bridges, M, Bucher, M, Burigana, C, Butler, RC, Calabrese, E, Cappellini, B, Cardoso, J-F, Catalano, A, Challinor, A, Chamballu, A, Chary, R-R, Chen, X, Chiang, HC, Chiang, L-Y, Christensen, PR, Church, S, Clements, DL, Colombi, S, Colombo, LPL, Couchot, F, Coulais, A, Crill, BP, Curto, A, Cuttaia, F, Danese, L, Davies, RD, Davis, RJ, De Bernardis, P, De Rosa, A, De Zotti, G, Delabrouille, J, Delouis, J-M, Desert, F-X, Dickinson, C, Diego, JM, Dolag, K, Dole, H, Donzelli, S, Dore, O, Douspis, M, Dunkley, J, Dupac, X, Efstathiou, G, Elsner, F, Ensslin, TA, Eriksen, HK, Finelli, F, Forni, O, Frailis, M, Fraisse, AA, Franceschi, E, Gaier, TC, Galeotta, S, Galli, S, Ganga, K, Giard, M, Giardino, G, Giraud-Heraud, Y, Gjerlow, E, Gonzalez-Nuevo, J, Gorski, KM, Gratton, S, Gregorio, A, Gruppuso, A, Gudmundsson, JE, Haissinski, J, Hamann, J, Hansen, FK, Hanson, D, Harrison, D, Henrot-Versille, S, Hernandez-Monteagudo, C, Herranz, D, Hildebrandt, SR, Hivon, E, Hobson, M, Holmes, WA, Hornstrup, A, Hou, Z, Hovest, W, Huffenberger, KM, Jaffe, AH, Jaffe, TR, Jewell, J, Jones, WC, Juvela, M, Keihanen, E, Keskitalo, R, Kisner, TS, Kneissl, R, Knoche, J, Knox, L, Kunz, M, Kurki-Suonio, H, Lagache, G, Lahteenmaki, A, Lamarre, J-M, Lasenby, A, Lattanzi, M, Laureijs, RJ, Lawrence, CR, Leach, S, Leahy, JP, Leonardi, R, Leon-Tavares, J, Lesgourgues, J, Lewis, A, Liguori, M, Lilje, PB, Linden-Vornle, M, Lopez-Caniego, M, Lubin, PM, Macias-Perez, JF, Maffei, B, Maino, D, Mandolesi, N, Maris, M, Marshall, DJ, Martin, PG, Martinez-Gonzalez, E, Masi, S, Massardi, M, Matarrese, S, Matthai, F, Mazzotta, P, Meinhold, PR, Melchiorri, A, Melin, J-B, Mendes, L, Menegoni, E, Mennella, A, Migliaccio, M, Millea, M, Mitra, S, Miville-Deschenes, M-A, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Moss, A, Munshi, D, Murphy, JA, Naselsky, P, Nati, F, Natoli, P, Netterfield, CB, Norgaard-Nielsen, HU, Noviello, F, Novikov, D, Novikov, I, O'Dwyer, IJ, Osborne, S, Oxborrow, CA, Paci, F, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Partridge, B, Pasian, F, Patanchon, G, Pearson, D, Pearson, TJ, Peiris, HV, Perdereau, O, Perotto, L, Perrotta, F, Pettorino, V, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Platania, P, Pointecouteau, E, Polenta, G, Ponthieu, N, Popa, L, Poutanen, T, Pratt, GW, Prezeau, G, Prunet, S, Puget, J-L, Rachen, JP, Reach, WT, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Roudier, G, Rowan-Robinson, M, Rubino-Martin, JA, Rusholme, B, Sandri, M, Santos, D, Savelainen, M, Savini, G, Scott, D, Seiffert, MD, Shellard, EPS, Spencer, LD, Starck, J-L, Stolyarov, V, Stompor, R, Sudiwala, R, Sunyaev, R, Sureau, F, Sutton, D, Suur-Uski, A-S, Sygnet, J-F, Tauber, JA, Tavagnacco, D, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Tuovinen, J, Tuerler, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Vittorio, N, Wade, A, Wandelt, BD, Wehus, IK, White, M, White, SDM, Wilkinson, A, Yvon, D, Zacchei, A, Zonca, A
• Other Authors: Science and Technology Facilities Council (STFC), Science and Technology Facilities Council 2006-2012
• Format: Article in Journal/Newspaper
• Language: English
• Published: EDP Sciences 2014
• Subjects: Science & Technology; Physical Sciences; Astronomy & Astrophysics; cosmic background radiation; cosmological parameters; early Universe; inflation; primordial nucleosynthesis; MICROWAVE-ANISOTROPY-PROBE; BARYON ACOUSTIC-OSCILLATIONS; SOUTH-POLE TELESCOPE; HUBBLE-SPACE-TELESCOPE; DIGITAL SKY SURVEY; BACKGROUND POWER SPECTRUM; SUPERNOVA LEGACY SURVEY; INFLATIONARY UNIVERSE SCENARIO; PRIMORDIAL MAGNETIC-FIELDS; FINE-STRUCTURE CONSTANT; astro-ph.CO; 0201 Astronomical And Space Sciences; South Pole; Hubble; South pole
• Online Access: http://hdl.handle.net/10044/1/60477; https://doi.org/10.1051/0004-6361/201321591

This paper presents the first cosmological results based on Planck measurements of the cosmic microwave background (CMB) temperature and lensing-potential power spectra. We find that the Planck spectra at high multipoles (ℓ ≳ 40) are extremely well described by the standard spatially-flat six-parameter ΛCDM cosmology with a power-law spectrum of adiabatic scalar perturbations. Within the context of this cosmology, the Planck data determine the cosmological parameters to high precision: the angular size of the sound horizon at recombination, the physical densities of baryons and cold dark matter, and the scalar spectral index are estimated to be θ∗ = (1.04147 ± 0.00062) × 10-2, Ωbh2 = 0.02205 ± 0.00028, Ωch2 = 0.1199 ± 0.0027, and ns = 0.9603 ± 0.0073, respectively(note that in this abstract we quote 68% errors on measured parameters and 95% upper limits on other parameters). For this cosmology, we find a low value of the Hubble constant, H0 = (67.3 ± 1.2) km s-1 Mpc-1, and a high value of the matter density parameter, Ωm = 0.315 ± 0.017. These values are in tension with recent direct measurements of H0 and the magnitude-redshift relation for Type Ia supernovae, but are in excellent agreement with geometrical constraints from baryon acoustic oscillation (BAO) surveys. Including curvature, we find that the Universe is consistent with spatial flatness to percent level precision using Planck CMB data alone. We use high-resolution CMB data together with Planck to provide greater control on extragalactic foreground components in an investigation of extensions to the six-parameter ΛCDM model. We present selected results from a large grid of cosmological models, using a range of additional astrophysical data sets in addition to Planck and high-resolution CMB data. None of these models are favoured over the standard six-parameter ΛCDM cosmology. The deviation of the scalar spectral index from unity isinsensitive to the addition of tensor modes and to changes in the matter content of the Universe. We find an upper limit ...