Authors
Planck Collaboration, Nabila Aghanim, Y Akrami, M Ashdown, J Aumont, C Baccigalupi, M Ballardini, AJ Banday, RB Barreiro, N Bartolo, S Basak, R Battye, K Benabed, JP Bernard, M Bersanelli, P Bielewicz, JJ Bock, JR Bond, J Borrill, FR Bouchet, F Boulanger, M Bucher, C Burigana, RC Butler, E Calabrese, JF Cardoso, J Carron, A Challinor, HC Chiang, J Chluba, LPL Colombo, C Combet, D Contreras, BP Crill, F Cuttaia, P de Bernardis, G de Zotti, J Delabrouille, JM Delouis, E Di Valentino, JM Diego, O Doré, M Douspis, A Ducout, X Dupac, S Dusini, G Efstathiou, F Elsner, TA Enßlin, HK Eriksen, Y Fantaye, M Farhang, J Fergusson, R Fernandez-Cobos, F Finelli, F Forastieri, M Frailis, AA Fraisse, E Franceschi, A Frolov, S Galeotta, S Galli, K Ganga, RT Génova-Santos, M Gerbino, T Ghosh, J González-Nuevo, KM Górski, S Gratton, A Gruppuso, JE Gudmundsson, J Hamann, W Handley, FK Hansen, D Herranz, SR Hildebrandt, E Hivon, Z Huang, AH Jaffe, WC Jones, A Karakci, E Keihänen, R Keskitalo, K Kiiveri, J Kim, TS Kisner, L Knox, N Krachmalnicoff, M Kunz, H Kurki-Suonio, G Lagache, JM Lamarre, A Lasenby, M Lattanzi, CR Lawrence, M Le Jeune, P Lemos, J Lesgourgues, F Levrier, A Lewis, M Liguori, PB Lilje, M Lilley, V Lindholm, M López-Caniego, PM Lubin, YZ Ma, JF Macías-Pérez, G Maggio, D Maino, N Mandolesi, A Mangilli, A Marcos-Caballero, M Maris, PG Martin, M Martinelli, E Martínez-González, S Matarrese, N Mauri, JD McEwen, PR Meinhold, A Melchiorri, A Mennella, M Migliaccio, M Millea, S Mitra, MA Miville-Deschênes, D Molinari, L Montier, G Morgante, A Moss, P Natoli, HU Nørgaard-Nielsen, L Pagano, D Paoletti, B Partridge, G Patanchon, HV Peiris, F Perrotta, V Pettorino, F Piacentini, L Polastri, G Polenta, JL Puget, JP Rachen, M Reinecke, M Remazeilles, A Renzi, G Rocha, C Rosset
Publication date
2020
Publisher
EDP Sciences
Description
We present cosmological parameter results from the final full-mission Planck measurements of the CMB anisotropies. We find good consistency with the standard spatially-flat 6-parameter Λ CDM cosmology having a power-law spectrum of adiabatic scalar perturbations (denoted" base Λ CDM" in this paper), from polarization, temperature, and lensing, separately and in combination. A combined analysis gives dark matter density Ω c h 2= 0.120±0.001, baryon density Ω b h 2= 0.0224±0.0001, scalar spectral index n s= 0.965±0.004, and optical depth τ= 0.054±0.007 (in this abstract we quote 68% confidence regions on measured parameters and 95% on upper limits). The angular acoustic scale is measured to 0.03% precision, with 100 θ∗= 1.0411±0.0003. These results are only weakly dependent on the cosmological model and remain stable, with somewhat increased errors, in many commonly considered extensions. Assuming the base-Λ CDM cosmology, the inferred late-Universe parameters are: Hubble constant H 0=(67.4±0.5) km/s/Mpc; matter density parameter Ω m= 0.315±0.007; and matter fluctuation amplitude σ 8= 0.811±0.006. We find no compelling evidence for extensions to the base-Λ CDM model. Combining with BAO we constrain the effective extra relativistic degrees of freedom to be N e f f= 2.99±0.17, and the neutrino mass is tightly constrained to∑ m ν< 0.12 eV. The CMB spectra continue to prefer higher lensing amplitudes than predicted in base-Λ CDM at over 2 σ, which pulls some parameters that affect the lensing amplitude away from the base-Λ CDM model; however, this is not supported by the lensing reconstruction or …
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Scholar articles
P Collaboration, N Aghanim, Y Akrami, M Ashdown… - 2020