| Title: |
Planck 2015 results XIII. Cosmological parameters |
| Authors: |
Ade, PAR; Aghanim, N; Arnaud, M; Ashdown, M; Aumont, J; Baccigalupi, C; Banday, AJ; Barreiro, RB; Bartlett, JG; Bartolo, N; Battaner, E; Battye, R; Benabed, K; Benoit, A; Benoit-Levy, A; Bernard, J-P; Bersanelli, M; Bielewicz, P; Bock, JJ; Bonaldi, A; Bonavera, L; Bond, JR; Borrill, J; Bouchet, FR; Boulanger, F; Bucher, M; Burigana, C; Butler, RC; Calabrese, E; Cardoso, J-F; Catalano, A; Challinor, A; Chamballu, A; Chary, R-R; Chiang, HC; Chluba, J; Christensen, PR; Church, S; Clements, DL; Colombi, S; Colombo, LPL; Combet, C; 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; Desert, F-X; Di Valentino, E; Dickinson, C; Diego, JM; Dolag, K; Dole, H; Donzelli, S; Dore, O; Douspis, M; Ducout, A; Dunkley, J; Dupac, X; Efstathiou, G; Elsner, F; Ensslin, TA; Eriksen, HK; Farhang, M; Fergusson, J; Finelli, F; Forni, O; Frailis, M; Fraisse, AA; Franceschi, E; Frejsel, A; Galeotta, S; Galli, S; Ganga, K; Gauthier, C; Gerbino, M; Ghosh, T; Giard, M; Giraud-Heraud, Y; Giusarma, E; Gjerlow, E; Gonzalez-Nuevo, J; Gorski, KM; Gratton, S; Gregorio, A; Gruppuso, A; Gudmundsson, JE; Hamann, J; Hansen, FK; Hanson, D; Harrison, DL; Helou, G; Henrot-Versille, S; Hernandez-Monteagudo, C; Herranz, D; Hildebrandt, SR; Hivon, E; Hobson, M; Holmes, WA; Hornstrup, A; Hovest, W; Huang, Z; Huffenberger, KM; Hurier, G; Jaffe, AH; Jaffe, TR; 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; Lawrence, CR; Leahy, JP; Leonardi, R; Lesgourgues, J; Levrier, F; Lewis, A; Liguori, M; Lilje, PB; Linden-Vornle, M; Lopez-Caniego, M; Lubin, PM; Macias-Perez, JF; Maggio, G; Maino, D; Mandolesi, N; Mangilli, A; Marchini, A; Maris, M; Martin, PG; Martinelli, M; Martinez-Gonzalez, E; Masi, S; Matarrese, S; McGehee, P; Meinhold, PR; Melchiorri, A; Melin, J-B; Mendes, L; 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; Oxborrow, CA; Paci, F; Pagano, L; Pajot, F; Paladini, R; Paoletti, D; Partridge, B; Pasian, F; Patanchon, G; Pearson, TJ; Perdereau, O; Perotto, L; Perrotta, F; Pettorino, V; Piacentini, F; Piat, M; Pierpaoli, E; Pietrobon, D; Plaszczynski, S; Pointecouteau, E; Polenta, G; Popa, L; Pratt, GW; Prezeau, G; Prunet, S; Puget, J-L; Rachen, JP; Reach, WT; Rebolo, R; Reinecke, M; Remazeilles, M; Renault, C; Renzi, A; Ristorcelli, I; Rocha, G; Rosset, C; Rossetti, M; Roudier, G; d'Orfeui, BR; Rowan-Robinson, M; Rubino-Martin, JA; Rusholme, B; Said, N; Salvatelli, V; Salvati, L; Sandri, M; Santos, D; Savelainen, M; Savini, G; Scott, D; Seiffert, MD; Serra, P; Shellard, EPS; Spencer, LD; Spinelli, M; Stolyarov, V; Stompor, R; Sudiwala, R; Sunyaev, R; Sutton, D; Suur-Uski, A-S; Sygnet, J-F; Tauber, JA; Terenzi, L; Toffolatti, L; Tomasi, M; Tristram, M; Trombetti, T; Tucci, M; Tuovinen, J; Turler, M; Umana, G; Valenziano, L; Valiviita, J; Van Tent, F; Vielva, P; Villa, F; Wade, LA; Wandelt, BD; Wehus, IK; White, M; White, SDM; Wilkinson, A; Yvon, D; Zacchei, A; Zonca, A |
| Source: |
Astronomy & Astrophysics , 594 , Article A13. (2016) |
| Publisher Information: |
EDP SCIENCES S A |
| Publication Year: |
2016 |
| Collection: |
University College London: UCL Discovery |
| Subject Terms: |
cosmology: observations / cosmology: theory / cosmic background radiation / cosmological parameters |
| Description: |
This paper presents cosmological results based on full-mission Planck observations of temperature and polarization anisotropies of the cosmic microwave background (CMB) radiation. Our results are in very good agreement with the 2013 analysis of the Planck nominal-mission temperature data, but with increased precision. The temperature and polarization power spectra are consistent with the standard spatially-flat 6-parameter ΛCDM cosmology with a power-law spectrum of adiabatic scalar perturbations (denoted “base ΛCDM” in this paper). From the Planck temperature data combined with Planck lensing, for this cosmology we find a Hubble constant, H0 = (67.8 ± 0.9) km s-1Mpc-1, a matter density parameter Ωm = 0.308 ± 0.012, and a tilted scalar spectral index with ns = 0.968 ± 0.006, consistent with the 2013 analysis. Note that in this abstract we quote 68% confidence limits on measured parameters and 95% upper limits on other parameters. We present the first results of polarization measurements with the Low Frequency Instrument at large angular scales. Combined with the Planck temperature and lensing data, these measurements give a reionization optical depth of τ = 0.066 ± 0.016, corresponding to a reionization redshift of . These results are consistent with those from WMAP polarization measurements cleaned for dust emission using 353-GHz polarization maps from the High Frequency Instrument. We find no evidence for any departure from base ΛCDM in the neutrino sector of the theory; for example, combining Planck observations with other astrophysical data we find Neff = 3.15 ± 0.23 for the effective number of relativistic degrees of freedom, consistent with the value Neff = 3.046 of the Standard Model of particle physics. The sum of neutrino masses is constrained to ∑ mν < 0.23 eV. The spatial curvature of our Universe is found to be very close to zero, with | ΩK | < 0.005. Adding a tensor component as a single-parameter extension to base ΛCDM we find an upper limit on the tensor-to-scalar ratio of r0.002< 0.11, ... |
| Document Type: |
article in journal/newspaper |
| File Description: |
text |
| Language: |
unknown |
| Relation: |
https://discovery.ucl.ac.uk/id/eprint/1543028/ |
| Availability: |
https://discovery.ucl.ac.uk/id/eprint/1543028/1/aa25830-15.pdf; https://discovery.ucl.ac.uk/id/eprint/1543028/ |
| Rights: |
open |
| Accession Number: |
edsbas.8731A743 |
| Database: |
BASE |