CINXE.COM
Planck 2013 results. XVI. Cosmological parameters - NASA/ADS
<!DOCTYPE html> <!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]--> <!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]--> <!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]--> <!--[if gt IE 8]><!--> <html class="no-js" lang="en"> <!--<![endif]--> <head> <title>Planck 2013 results. XVI. Cosmological parameters - NASA/ADS</title> <!-- favicon --> <link rel="apple-touch-icon" sizes="180x180" href="//styles/favicon/apple-touch-icon.png" /> <link rel="icon" type="image/png" sizes="32x32" href="//styles/favicon/favicon-32x32.png" /> <link rel="icon" type="image/png" sizes="16x16" href="//styles/favicon/favicon-16x16.png" /> <link rel="manifest" href="//styles/favicon/site.webmanifest" /> <link rel="mask-icon" href="//styles/favicon/safari-pinned-tab.svg" color="#5bbad5" /> <meta name="apple-mobile-web-app-title" content="NASA ADS" /> <meta name="application-name" content="NASA ADS" /> <meta name="msapplication-TileColor" content="#ffc40d" /> <meta name="theme-color" content="#ffffff" /> <!-- /favicon --> <link rel="stylesheet" href="/styles/css/styles.css"> <meta name="robots" content="noarchive"> <link rel="canonical" href="http://ui.adsabs.harvard.edu/abs/2014A&A...571A..16P/abstract"/> <meta name="description" content="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<SUB>∗</SUB> = (1.04147 ± 0.00062) × 10<SUP>-2</SUP>, Ω<SUB>b</SUB>h<SUP>2</SUP> = 0.02205 ± 0.00028, Ω<SUB>c</SUB>h<SUP>2</SUP> = 0.1199 ± 0.0027, and n<SUB>s</SUB> = 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, H<SUB>0</SUB> = (67.3 ± 1.2) km s<SUP>-1</SUP> Mpc<SUP>-1</SUP>, and a high value of the matter density parameter, Ω<SUB>m</SUB> = 0.315 ± 0.017. These values are in tension with recent direct measurements of H<SUB>0</SUB> 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 of r<SUB>0.002</SUB>&lt; 0.11 on the tensor-to-scalar ratio. There is no evidence for additional neutrino-like relativistic particles beyond the three families of neutrinos in the standard model. Using BAO and CMB data, we find N<SUB>eff</SUB> = 3.30 ± 0.27 for the effective number of relativistic degrees of freedom, and an upper limit of 0.23 eV for the sum of neutrino masses. Our results are in excellent agreement with big bang nucleosynthesis and the standard value of N<SUB>eff</SUB> = 3.046. We find no evidence for dynamical dark energy; using BAO and CMB data, the dark energy equation of state parameter is constrained to be w = -1.13<SUB>-0.10</SUB><SUP>+0.13</SUP>. We also use the Planck data to set limits on a possible variation of the fine-structure constant, dark matter annihilation and primordial magnetic fields. Despite the success of the six-parameter ΛCDM model in describing the Planck data at high multipoles, we note that this cosmology does not provide a good fit to the temperature power spectrum at low multipoles. The unusual shape of the spectrum in the multipole range 20 ≲ ℓ ≲ 40 was seen previously in the WMAP data and is a real feature of the primordial CMB anisotropies. The poor fit to the spectrum at low multipoles is not of decisive significance, but is an "anomaly" in an otherwise self-consistent analysis of the Planck temperature data."> <!-- Open Graph --> <meta property="og:type" content="article"> <meta property="og:title" content="Planck 2013 results. XVI. Cosmological parameters"> <meta property="og:site_name" content="NASA/ADS"> <meta property="og:description" content="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<SUB>∗</SUB> = (1.04147 ± 0.00062) × 10<SUP>-2</SUP>, Ω<SUB>b</SUB>h<SUP>2</SUP> = 0.02205 ± 0.00028, Ω<SUB>c</SUB>h<SUP>2</SUP> = 0.1199 ± 0.0027, and n<SUB>s</SUB> = 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, H<SUB>0</SUB> = (67.3 ± 1.2) km s<SUP>-1</SUP> Mpc<SUP>-1</SUP>, and a high value of the matter density parameter, Ω<SUB>m</SUB> = 0.315 ± 0.017. These values are in tension with recent direct measurements of H<SUB>0</SUB> 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 of r<SUB>0.002</SUB>&lt; 0.11 on the tensor-to-scalar ratio. There is no evidence for additional neutrino-like relativistic particles beyond the three families of neutrinos in the standard model. Using BAO and CMB data, we find N<SUB>eff</SUB> = 3.30 ± 0.27 for the effective number of relativistic degrees of freedom, and an upper limit of 0.23 eV for the sum of neutrino masses. Our results are in excellent agreement with big bang nucleosynthesis and the standard value of N<SUB>eff</SUB> = 3.046. We find no evidence for dynamical dark energy; using BAO and CMB data, the dark energy equation of state parameter is constrained to be w = -1.13<SUB>-0.10</SUB><SUP>+0.13</SUP>. We also use the Planck data to set limits on a possible variation of the fine-structure constant, dark matter annihilation and primordial magnetic fields. Despite the success of the six-parameter ΛCDM model in describing the Planck data at high multipoles, we note that this cosmology does not provide a good fit to the temperature power spectrum at low multipoles. The unusual shape of the spectrum in the multipole range 20 ≲ ℓ ≲ 40 was seen previously in the WMAP data and is a real feature of the primordial CMB anisotropies. The poor fit to the spectrum at low multipoles is not of decisive significance, but is an "anomaly" in an otherwise self-consistent analysis of the Planck temperature data."> <meta property="og:url" content="https://ui.adsabs.harvard.edu/abs/2014A&A...571A..16P/abstract"> <meta property="og:image" content="https://ui.adsabs.harvard.edu/styles/img/transparent_logo.svg"> <meta property="article:published_time" content="11/2014"> <meta property="article:author" content="Planck Collaboration"> <meta property="article:author" content="Ade, P. A. R."> <meta property="article:author" content="Aghanim, N."> <meta property="article:author" content="Armitage-Caplan, C."> <meta property="article:author" content="Arnaud, M."> <meta property="article:author" content="Ashdown, M."> <meta property="article:author" content="Atrio-Barandela, F."> <meta property="article:author" content="Aumont, J."> <meta property="article:author" content="Baccigalupi, C."> <meta property="article:author" content="Banday, A. J."> <meta property="article:author" content="Barreiro, R. B."> <meta property="article:author" content="Bartlett, J. G."> <meta property="article:author" content="Battaner, E."> <meta property="article:author" content="Benabed, K."> <meta property="article:author" content="Benoît, A."> <meta property="article:author" content="Benoit-Lévy, A."> <meta property="article:author" content="Bernard, J. -P."> <meta property="article:author" content="Bersanelli, M."> <meta property="article:author" content="Bielewicz, P."> <meta property="article:author" content="Bobin, J."> <meta property="article:author" content="Bock, J. J."> <meta property="article:author" content="Bonaldi, A."> <meta property="article:author" content="Bond, J. R."> <meta property="article:author" content="Borrill, J."> <meta property="article:author" content="Bouchet, F. R."> <meta property="article:author" content="Bridges, M."> <meta property="article:author" content="Bucher, M."> <meta property="article:author" content="Burigana, C."> <meta property="article:author" content="Butler, R. C."> <meta property="article:author" content="Calabrese, E."> <meta property="article:author" content="Cappellini, B."> <meta property="article:author" content="Cardoso, J. -F."> <meta property="article:author" content="Catalano, A."> <meta property="article:author" content="Challinor, A."> <meta property="article:author" content="Chamballu, A."> <meta property="article:author" content="Chary, R. -R."> <meta property="article:author" content="Chen, X."> <meta property="article:author" content="Chiang, H. C."> <meta property="article:author" content="Chiang, L. -Y."> <meta property="article:author" content="Christensen, P. R."> <meta property="article:author" content="Church, S."> <meta property="article:author" content="Clements, D. L."> <meta property="article:author" content="Colombi, S."> <meta property="article:author" content="Colombo, L. P. L."> <meta property="article:author" content="Couchot, F."> <meta property="article:author" content="Coulais, A."> <meta property="article:author" content="Crill, B. P."> <meta property="article:author" content="Curto, A."> <meta property="article:author" content="Cuttaia, F."> <meta property="article:author" content="Danese, L."> <meta property="article:author" content="Davies, R. D."> <meta property="article:author" content="Davis, R. J."> <meta property="article:author" content="de Bernardis, P."> <meta property="article:author" content="de Rosa, A."> <meta property="article:author" content="de Zotti, G."> <meta property="article:author" content="Delabrouille, J."> <meta property="article:author" content="Delouis, J. -M."> <meta property="article:author" content="Désert, F. -X."> <meta property="article:author" content="Dickinson, C."> <meta property="article:author" content="Diego, J. M."> <meta property="article:author" content="Dolag, K."> <meta property="article:author" content="Dole, H."> <meta property="article:author" content="Donzelli, S."> <meta property="article:author" content="Doré, O."> <meta property="article:author" content="Douspis, M."> <meta property="article:author" content="Dunkley, J."> <meta property="article:author" content="Dupac, X."> <meta property="article:author" content="Efstathiou, G."> <meta property="article:author" content="Elsner, F."> <meta property="article:author" content="Enßlin, T. A."> <meta property="article:author" content="Eriksen, H. K."> <meta property="article:author" content="Finelli, F."> <meta property="article:author" content="Forni, O."> <meta property="article:author" content="Frailis, M."> <meta property="article:author" content="Fraisse, A. A."> <meta property="article:author" content="Franceschi, E."> <meta property="article:author" content="Gaier, T. C."> <meta property="article:author" content="Galeotta, S."> <meta property="article:author" content="Galli, S."> <meta property="article:author" content="Ganga, K."> <meta property="article:author" content="Giard, M."> <meta property="article:author" content="Giardino, G."> <meta property="article:author" content="Giraud-Héraud, Y."> <meta property="article:author" content="Gjerløw, E."> <meta property="article:author" content="González-Nuevo, J."> <meta property="article:author" content="Górski, K. M."> <meta property="article:author" content="Gratton, S."> <meta property="article:author" content="Gregorio, A."> <meta property="article:author" content="Gruppuso, A."> <meta property="article:author" content="Gudmundsson, J. E."> <meta property="article:author" content="Haissinski, J."> <meta property="article:author" content="Hamann, J."> <meta property="article:author" content="Hansen, F. K."> <meta property="article:author" content="Hanson, D."> <meta property="article:author" content="Harrison, D."> <meta property="article:author" content="Henrot-Versillé, S."> <meta property="article:author" content="Hernández-Monteagudo, C."> <meta property="article:author" content="Herranz, D."> <meta property="article:author" content="Hildebrandt, S. R."> <meta property="article:author" content="Hivon, E."> <meta property="article:author" content="Hobson, M."> <meta property="article:author" content="Holmes, W. A."> <meta property="article:author" content="Hornstrup, A."> <meta property="article:author" content="Hou, Z."> <meta property="article:author" content="Hovest, W."> <meta property="article:author" content="Huffenberger, K. M."> <meta property="article:author" content="Jaffe, A. H."> <meta property="article:author" content="Jaffe, T. R."> <meta property="article:author" content="Jewell, J."> <meta property="article:author" content="Jones, W. C."> <meta property="article:author" content="Juvela, M."> <meta property="article:author" content="Keihänen, E."> <meta property="article:author" content="Keskitalo, R."> <meta property="article:author" content="Kisner, T. S."> <meta property="article:author" content="Kneissl, R."> <meta property="article:author" content="Knoche, J."> <meta property="article:author" content="Knox, L."> <meta property="article:author" content="Kunz, M."> <meta property="article:author" content="Kurki-Suonio, H."> <meta property="article:author" content="Lagache, G."> <meta property="article:author" content="Lähteenmäki, A."> <meta property="article:author" content="Lamarre, J. -M."> <meta property="article:author" content="Lasenby, A."> <meta property="article:author" content="Lattanzi, M."> <meta property="article:author" content="Laureijs, R. J."> <meta property="article:author" content="Lawrence, C. R."> <meta property="article:author" content="Leach, S."> <meta property="article:author" content="Leahy, J. P."> <meta property="article:author" content="Leonardi, R."> <meta property="article:author" content="León-Tavares, J."> <meta property="article:author" content="Lesgourgues, J."> <meta property="article:author" content="Lewis, A."> <meta property="article:author" content="Liguori, M."> <meta property="article:author" content="Lilje, P. B."> <meta property="article:author" content="Linden-Vørnle, M."> <meta property="article:author" content="López-Caniego, M."> <meta property="article:author" content="Lubin, P. M."> <meta property="article:author" content="Macías-Pérez, J. F."> <meta property="article:author" content="Maffei, B."> <meta property="article:author" content="Maino, D."> <meta property="article:author" content="Mandolesi, N."> <meta property="article:author" content="Maris, M."> <meta property="article:author" content="Marshall, D. J."> <meta property="article:author" content="Martin, P. G."> <meta property="article:author" content="Martínez-González, E."> <meta property="article:author" content="Masi, S."> <meta property="article:author" content="Massardi, M."> <meta property="article:author" content="Matarrese, S."> <meta property="article:author" content="Matthai, F."> <meta property="article:author" content="Mazzotta, P."> <meta property="article:author" content="Meinhold, P. R."> <meta property="article:author" content="Melchiorri, A."> <meta property="article:author" content="Melin, J. -B."> <meta property="article:author" content="Mendes, L."> <meta property="article:author" content="Menegoni, E."> <meta property="article:author" content="Mennella, A."> <meta property="article:author" content="Migliaccio, M."> <meta property="article:author" content="Millea, M."> <meta property="article:author" content="Mitra, S."> <meta property="article:author" content="Miville-Deschênes, M. -A."> <meta property="article:author" content="Moneti, A."> <meta property="article:author" content="Montier, L."> <meta property="article:author" content="Morgante, G."> <meta property="article:author" content="Mortlock, D."> <meta property="article:author" content="Moss, A."> <meta property="article:author" content="Munshi, D."> <meta property="article:author" content="Murphy, J. A."> <meta property="article:author" content="Naselsky, P."> <meta property="article:author" content="Nati, F."> <meta property="article:author" content="Natoli, P."> <meta property="article:author" content="Netterfield, C. B."> <meta property="article:author" content="Nørgaard-Nielsen, H. U."> <meta property="article:author" content="Noviello, F."> <meta property="article:author" content="Novikov, D."> <meta property="article:author" content="Novikov, I."> <meta property="article:author" content="O'Dwyer, I. J."> <meta property="article:author" content="Osborne, S."> <meta property="article:author" content="Oxborrow, C. A."> <meta property="article:author" content="Paci, F."> <meta property="article:author" content="Pagano, L."> <meta property="article:author" content="Pajot, F."> <meta property="article:author" content="Paladini, R."> <meta property="article:author" content="Paoletti, D."> <meta property="article:author" content="Partridge, B."> <meta property="article:author" content="Pasian, F."> <meta property="article:author" content="Patanchon, G."> <meta property="article:author" content="Pearson, D."> <meta property="article:author" content="Pearson, T. J."> <meta property="article:author" content="Peiris, H. V."> <meta property="article:author" content="Perdereau, O."> <meta property="article:author" content="Perotto, L."> <meta property="article:author" content="Perrotta, F."> <meta property="article:author" content="Pettorino, V."> <meta property="article:author" content="Piacentini, F."> <meta property="article:author" content="Piat, M."> <meta property="article:author" content="Pierpaoli, E."> <meta property="article:author" content="Pietrobon, D."> <meta property="article:author" content="Plaszczynski, S."> <meta property="article:author" content="Platania, P."> <meta property="article:author" content="Pointecouteau, E."> <meta property="article:author" content="Polenta, G."> <meta property="article:author" content="Ponthieu, N."> <meta property="article:author" content="Popa, L."> <meta property="article:author" content="Poutanen, T."> <meta property="article:author" content="Pratt, G. W."> <meta property="article:author" content="Prézeau, G."> <meta property="article:author" content="Prunet, S."> <meta property="article:author" content="Puget, J. -L."> <meta property="article:author" content="Rachen, J. P."> <meta property="article:author" content="Reach, W. T."> <meta property="article:author" content="Rebolo, R."> <meta property="article:author" content="Reinecke, M."> <meta property="article:author" content="Remazeilles, M."> <meta property="article:author" content="Renault, C."> <meta property="article:author" content="Ricciardi, S."> <meta property="article:author" content="Riller, T."> <meta property="article:author" content="Ristorcelli, I."> <meta property="article:author" content="Rocha, G."> <meta property="article:author" content="Rosset, C."> <meta property="article:author" content="Roudier, G."> <meta property="article:author" content="Rowan-Robinson, M."> <meta property="article:author" content="Rubiño-Martín, J. A."> <meta property="article:author" content="Rusholme, B."> <meta property="article:author" content="Sandri, M."> <meta property="article:author" content="Santos, D."> <meta property="article:author" content="Savelainen, M."> <meta property="article:author" content="Savini, G."> <meta property="article:author" content="Scott, D."> <meta property="article:author" content="Seiffert, M. D."> <meta property="article:author" content="Shellard, E. P. S."> <meta property="article:author" content="Spencer, L. D."> <meta property="article:author" content="Starck, J. -L."> <meta property="article:author" content="Stolyarov, V."> <meta property="article:author" content="Stompor, R."> <meta property="article:author" content="Sudiwala, R."> <meta property="article:author" content="Sunyaev, R."> <meta property="article:author" content="Sureau, F."> <meta property="article:author" content="Sutton, D."> <meta property="article:author" content="Suur-Uski, A. -S."> <meta property="article:author" content="Sygnet, J. -F."> <meta property="article:author" content="Tauber, J. A."> <meta property="article:author" content="Tavagnacco, D."> <meta property="article:author" content="Terenzi, L."> <meta property="article:author" content="Toffolatti, L."> <meta property="article:author" content="Tomasi, M."> <meta property="article:author" content="Tristram, M."> <meta property="article:author" content="Tucci, M."> <meta property="article:author" content="Tuovinen, J."> <meta property="article:author" content="Türler, M."> <meta property="article:author" content="Umana, G."> <meta property="article:author" content="Valenziano, L."> <meta property="article:author" content="Valiviita, J."> <meta property="article:author" content="Van Tent, B."> <meta property="article:author" content="Vielva, P."> <meta property="article:author" content="Villa, F."> <meta property="article:author" content="Vittorio, N."> <meta property="article:author" content="Wade, L. A."> <meta property="article:author" content="Wandelt, B. D."> <meta property="article:author" content="Wehus, I. K."> <meta property="article:author" content="White, M."> <meta property="article:author" content="White, S. D. M."> <meta property="article:author" content="Wilkinson, A."> <meta property="article:author" content="Yvon, D."> <meta property="article:author" content="Zacchei, A."> <meta property="article:author" content="Zonca, A."> <!-- citation_* --> <meta name="citation_journal_title" content="Astronomy and Astrophysics"> <meta name="citation_authors" content="Planck Collaboration;Ade, P. A. R.;Aghanim, N.;Armitage-Caplan, C.;Arnaud, M.;Ashdown, M.;Atrio-Barandela, F.;Aumont, J.;Baccigalupi, C.;Banday, A. J.;Barreiro, R. B.;Bartlett, J. G.;Battaner, E.;Benabed, K.;Benoît, A.;Benoit-Lévy, A.;Bernard, J. -P.;Bersanelli, M.;Bielewicz, P.;Bobin, J.;Bock, J. J.;Bonaldi, A.;Bond, J. R.;Borrill, J.;Bouchet, F. R.;Bridges, M.;Bucher, M.;Burigana, C.;Butler, R. C.;Calabrese, E.;Cappellini, B.;Cardoso, J. -F.;Catalano, A.;Challinor, A.;Chamballu, A.;Chary, R. -R.;Chen, X.;Chiang, H. C.;Chiang, L. -Y.;Christensen, P. R.;Church, S.;Clements, D. L.;Colombi, S.;Colombo, L. P. L.;Couchot, F.;Coulais, A.;Crill, B. P.;Curto, A.;Cuttaia, F.;Danese, L.;Davies, R. D.;Davis, R. J.;de Bernardis, P.;de Rosa, A.;de Zotti, G.;Delabrouille, J.;Delouis, J. -M.;Désert, F. -X.;Dickinson, C.;Diego, J. M.;Dolag, K.;Dole, H.;Donzelli, S.;Doré, O.;Douspis, M.;Dunkley, J.;Dupac, X.;Efstathiou, G.;Elsner, F.;Enßlin, T. A.;Eriksen, H. K.;Finelli, F.;Forni, O.;Frailis, M.;Fraisse, A. A.;Franceschi, E.;Gaier, T. C.;Galeotta, S.;Galli, S.;Ganga, K.;Giard, M.;Giardino, G.;Giraud-Héraud, Y.;Gjerløw, E.;González-Nuevo, J.;Górski, K. M.;Gratton, S.;Gregorio, A.;Gruppuso, A.;Gudmundsson, J. E.;Haissinski, J.;Hamann, J.;Hansen, F. K.;Hanson, D.;Harrison, D.;Henrot-Versillé, S.;Hernández-Monteagudo, C.;Herranz, D.;Hildebrandt, S. R.;Hivon, E.;Hobson, M.;Holmes, W. A.;Hornstrup, A.;Hou, Z.;Hovest, W.;Huffenberger, K. M.;Jaffe, A. H.;Jaffe, T. R.;Jewell, J.;Jones, W. C.;Juvela, M.;Keihänen, E.;Keskitalo, R.;Kisner, T. S.;Kneissl, R.;Knoche, J.;Knox, L.;Kunz, M.;Kurki-Suonio, H.;Lagache, G.;Lähteenmäki, A.;Lamarre, J. -M.;Lasenby, A.;Lattanzi, M.;Laureijs, R. J.;Lawrence, C. R.;Leach, S.;Leahy, J. P.;Leonardi, R.;León-Tavares, J.;Lesgourgues, J.;Lewis, A.;Liguori, M.;Lilje, P. B.;Linden-Vørnle, M.;López-Caniego, M.;Lubin, P. M.;Macías-Pérez, J. F.;Maffei, B.;Maino, D.;Mandolesi, N.;Maris, M.;Marshall, D. J.;Martin, P. G.;Martínez-González, E.;Masi, S.;Massardi, M.;Matarrese, S.;Matthai, F.;Mazzotta, P.;Meinhold, P. R.;Melchiorri, A.;Melin, J. -B.;Mendes, L.;Menegoni, E.;Mennella, A.;Migliaccio, M.;Millea, M.;Mitra, S.;Miville-Deschênes, M. -A.;Moneti, A.;Montier, L.;Morgante, G.;Mortlock, D.;Moss, A.;Munshi, D.;Murphy, J. A.;Naselsky, P.;Nati, F.;Natoli, P.;Netterfield, C. B.;Nørgaard-Nielsen, H. U.;Noviello, F.;Novikov, D.;Novikov, I.;O'Dwyer, I. J.;Osborne, S.;Oxborrow, C. A.;Paci, F.;Pagano, L.;Pajot, F.;Paladini, R.;Paoletti, D.;Partridge, B.;Pasian, F.;Patanchon, G.;Pearson, D.;Pearson, T. J.;Peiris, H. V.;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, G. W.;Prézeau, G.;Prunet, S.;Puget, J. -L.;Rachen, J. P.;Reach, W. T.;Rebolo, R.;Reinecke, M.;Remazeilles, M.;Renault, C.;Ricciardi, S.;Riller, T.;Ristorcelli, I.;Rocha, G.;Rosset, C.;Roudier, G.;Rowan-Robinson, M.;Rubiño-Martín, J. A.;Rusholme, B.;Sandri, M.;Santos, D.;Savelainen, M.;Savini, G.;Scott, D.;Seiffert, M. D.;Shellard, E. P. S.;Spencer, L. D.;Starck, J. -L.;Stolyarov, V.;Stompor, R.;Sudiwala, R.;Sunyaev, R.;Sureau, F.;Sutton, D.;Suur-Uski, A. -S.;Sygnet, J. -F.;Tauber, J. A.;Tavagnacco, D.;Terenzi, L.;Toffolatti, L.;Tomasi, M.;Tristram, M.;Tucci, M.;Tuovinen, J.;Türler, M.;Umana, G.;Valenziano, L.;Valiviita, J.;Van Tent, B.;Vielva, P.;Villa, F.;Vittorio, N.;Wade, L. A.;Wandelt, B. D.;Wehus, I. K.;White, M.;White, S. D. M.;Wilkinson, A.;Yvon, D.;Zacchei, A.;Zonca, A."> <meta name="citation_title" content="Planck 2013 results. XVI. Cosmological parameters"> <meta name="citation_date" content="11/2014"> <meta name="citation_volume" content="571"> <meta name="citation_firstpage" content="A16"> <meta name="citation_doi" content="10.1051/0004-6361/201321591"> <meta name="citation_issn" content="0004-6361"> <meta name="citation_language" content="en"> <meta name="citation_keywords" content="cosmic background radiation"> <meta name="citation_keywords" content="cosmological parameters"> <meta name="citation_keywords" content="early Universe"> <meta name="citation_keywords" content="inflation"> <meta name="citation_keywords" content="primordial nucleosynthesis"> <meta name="citation_keywords" content="Astrophysics - Cosmology and Nongalactic Astrophysics"> <meta name="citation_abstract_html_url" content="https://ui.adsabs.harvard.edu/abs/2014A&A...571A..16P/abstract"> <meta name="citation_publication_date" content="11/2014"> <meta name="citation_pdf_url" content="https://ui.adsabs.harvard.edu/link_gateway/2014A&A...571A..16P/PUB_PDF"> <meta name="citation_arxiv_id" content="arXiv:1303.5076" /> <link title="schema(PRISM)" rel="schema.prism" href="http://prismstandard.org/namespaces/1.2/basic/" /> <meta name="prism.publicationDate" content="11/2014" /> <meta name="prism.publicationName" content="A&A" /> <meta name="prism.issn" content="0004-6361" /> <meta name="prism.volume" content="571" /> <meta name="prism.startingPage" content="A16" /> <link title="schema(DC)" rel="schema.dc" href="http://purl.org/dc/elements/1.1/" /> <meta name="dc.identifier" content="doi:10.1051/0004-6361/201321591" /> <meta name="dc.date" content="11/2014" /> <meta name="dc.source" content="A&A" /> <meta name="dc.title" content="Planck 2013 results. XVI. Cosmological parameters" /> <meta name="dc.creator" content="Planck Collaboration"> <meta name="dc.creator" content="Ade, P. A. R."> <meta name="dc.creator" content="Aghanim, N."> <meta name="dc.creator" content="Armitage-Caplan, C."> <meta name="dc.creator" content="Arnaud, M."> <meta name="dc.creator" content="Ashdown, M."> <meta name="dc.creator" content="Atrio-Barandela, F."> <meta name="dc.creator" content="Aumont, J."> <meta name="dc.creator" content="Baccigalupi, C."> <meta name="dc.creator" content="Banday, A. J."> <meta name="dc.creator" content="Barreiro, R. B."> <meta name="dc.creator" content="Bartlett, J. G."> <meta name="dc.creator" content="Battaner, E."> <meta name="dc.creator" content="Benabed, K."> <meta name="dc.creator" content="Benoît, A."> <meta name="dc.creator" content="Benoit-Lévy, A."> <meta name="dc.creator" content="Bernard, J. -P."> <meta name="dc.creator" content="Bersanelli, M."> <meta name="dc.creator" content="Bielewicz, P."> <meta name="dc.creator" content="Bobin, J."> <meta name="dc.creator" content="Bock, J. J."> <meta name="dc.creator" content="Bonaldi, A."> <meta name="dc.creator" content="Bond, J. R."> <meta name="dc.creator" content="Borrill, J."> <meta name="dc.creator" content="Bouchet, F. R."> <meta name="dc.creator" content="Bridges, M."> <meta name="dc.creator" content="Bucher, M."> <meta name="dc.creator" content="Burigana, C."> <meta name="dc.creator" content="Butler, R. C."> <meta name="dc.creator" content="Calabrese, E."> <meta name="dc.creator" content="Cappellini, B."> <meta name="dc.creator" content="Cardoso, J. -F."> <meta name="dc.creator" content="Catalano, A."> <meta name="dc.creator" content="Challinor, A."> <meta name="dc.creator" content="Chamballu, A."> <meta name="dc.creator" content="Chary, R. -R."> <meta name="dc.creator" content="Chen, X."> <meta name="dc.creator" content="Chiang, H. C."> <meta name="dc.creator" content="Chiang, L. -Y."> <meta name="dc.creator" content="Christensen, P. R."> <meta name="dc.creator" content="Church, S."> <meta name="dc.creator" content="Clements, D. L."> <meta name="dc.creator" content="Colombi, S."> <meta name="dc.creator" content="Colombo, L. P. L."> <meta name="dc.creator" content="Couchot, F."> <meta name="dc.creator" content="Coulais, A."> <meta name="dc.creator" content="Crill, B. P."> <meta name="dc.creator" content="Curto, A."> <meta name="dc.creator" content="Cuttaia, F."> <meta name="dc.creator" content="Danese, L."> <meta name="dc.creator" content="Davies, R. D."> <meta name="dc.creator" content="Davis, R. J."> <meta name="dc.creator" content="de Bernardis, P."> <meta name="dc.creator" content="de Rosa, A."> <meta name="dc.creator" content="de Zotti, G."> <meta name="dc.creator" content="Delabrouille, J."> <meta name="dc.creator" content="Delouis, J. -M."> <meta name="dc.creator" content="Désert, F. -X."> <meta name="dc.creator" content="Dickinson, C."> <meta name="dc.creator" content="Diego, J. M."> <meta name="dc.creator" content="Dolag, K."> <meta name="dc.creator" content="Dole, H."> <meta name="dc.creator" content="Donzelli, S."> <meta name="dc.creator" content="Doré, O."> <meta name="dc.creator" content="Douspis, M."> <meta name="dc.creator" content="Dunkley, J."> <meta name="dc.creator" content="Dupac, X."> <meta name="dc.creator" content="Efstathiou, G."> <meta name="dc.creator" content="Elsner, F."> <meta name="dc.creator" content="Enßlin, T. A."> <meta name="dc.creator" content="Eriksen, H. K."> <meta name="dc.creator" content="Finelli, F."> <meta name="dc.creator" content="Forni, O."> <meta name="dc.creator" content="Frailis, M."> <meta name="dc.creator" content="Fraisse, A. A."> <meta name="dc.creator" content="Franceschi, E."> <meta name="dc.creator" content="Gaier, T. C."> <meta name="dc.creator" content="Galeotta, S."> <meta name="dc.creator" content="Galli, S."> <meta name="dc.creator" content="Ganga, K."> <meta name="dc.creator" content="Giard, M."> <meta name="dc.creator" content="Giardino, G."> <meta name="dc.creator" content="Giraud-Héraud, Y."> <meta name="dc.creator" content="Gjerløw, E."> <meta name="dc.creator" content="González-Nuevo, J."> <meta name="dc.creator" content="Górski, K. M."> <meta name="dc.creator" content="Gratton, S."> <meta name="dc.creator" content="Gregorio, A."> <meta name="dc.creator" content="Gruppuso, A."> <meta name="dc.creator" content="Gudmundsson, J. E."> <meta name="dc.creator" content="Haissinski, J."> <meta name="dc.creator" content="Hamann, J."> <meta name="dc.creator" content="Hansen, F. K."> <meta name="dc.creator" content="Hanson, D."> <meta name="dc.creator" content="Harrison, D."> <meta name="dc.creator" content="Henrot-Versillé, S."> <meta name="dc.creator" content="Hernández-Monteagudo, C."> <meta name="dc.creator" content="Herranz, D."> <meta name="dc.creator" content="Hildebrandt, S. R."> <meta name="dc.creator" content="Hivon, E."> <meta name="dc.creator" content="Hobson, M."> <meta name="dc.creator" content="Holmes, W. A."> <meta name="dc.creator" content="Hornstrup, A."> <meta name="dc.creator" content="Hou, Z."> <meta name="dc.creator" content="Hovest, W."> <meta name="dc.creator" content="Huffenberger, K. M."> <meta name="dc.creator" content="Jaffe, A. H."> <meta name="dc.creator" content="Jaffe, T. R."> <meta name="dc.creator" content="Jewell, J."> <meta name="dc.creator" content="Jones, W. C."> <meta name="dc.creator" content="Juvela, M."> <meta name="dc.creator" content="Keihänen, E."> <meta name="dc.creator" content="Keskitalo, R."> <meta name="dc.creator" content="Kisner, T. S."> <meta name="dc.creator" content="Kneissl, R."> <meta name="dc.creator" content="Knoche, J."> <meta name="dc.creator" content="Knox, L."> <meta name="dc.creator" content="Kunz, M."> <meta name="dc.creator" content="Kurki-Suonio, H."> <meta name="dc.creator" content="Lagache, G."> <meta name="dc.creator" content="Lähteenmäki, A."> <meta name="dc.creator" content="Lamarre, J. -M."> <meta name="dc.creator" content="Lasenby, A."> <meta name="dc.creator" content="Lattanzi, M."> <meta name="dc.creator" content="Laureijs, R. J."> <meta name="dc.creator" content="Lawrence, C. R."> <meta name="dc.creator" content="Leach, S."> <meta name="dc.creator" content="Leahy, J. P."> <meta name="dc.creator" content="Leonardi, R."> <meta name="dc.creator" content="León-Tavares, J."> <meta name="dc.creator" content="Lesgourgues, J."> <meta name="dc.creator" content="Lewis, A."> <meta name="dc.creator" content="Liguori, M."> <meta name="dc.creator" content="Lilje, P. B."> <meta name="dc.creator" content="Linden-Vørnle, M."> <meta name="dc.creator" content="López-Caniego, M."> <meta name="dc.creator" content="Lubin, P. M."> <meta name="dc.creator" content="Macías-Pérez, J. F."> <meta name="dc.creator" content="Maffei, B."> <meta name="dc.creator" content="Maino, D."> <meta name="dc.creator" content="Mandolesi, N."> <meta name="dc.creator" content="Maris, M."> <meta name="dc.creator" content="Marshall, D. J."> <meta name="dc.creator" content="Martin, P. G."> <meta name="dc.creator" content="Martínez-González, E."> <meta name="dc.creator" content="Masi, S."> <meta name="dc.creator" content="Massardi, M."> <meta name="dc.creator" content="Matarrese, S."> <meta name="dc.creator" content="Matthai, F."> <meta name="dc.creator" content="Mazzotta, P."> <meta name="dc.creator" content="Meinhold, P. R."> <meta name="dc.creator" content="Melchiorri, A."> <meta name="dc.creator" content="Melin, J. -B."> <meta name="dc.creator" content="Mendes, L."> <meta name="dc.creator" content="Menegoni, E."> <meta name="dc.creator" content="Mennella, A."> <meta name="dc.creator" content="Migliaccio, M."> <meta name="dc.creator" content="Millea, M."> <meta name="dc.creator" content="Mitra, S."> <meta name="dc.creator" content="Miville-Deschênes, M. -A."> <meta name="dc.creator" content="Moneti, A."> <meta name="dc.creator" content="Montier, L."> <meta name="dc.creator" content="Morgante, G."> <meta name="dc.creator" content="Mortlock, D."> <meta name="dc.creator" content="Moss, A."> <meta name="dc.creator" content="Munshi, D."> <meta name="dc.creator" content="Murphy, J. A."> <meta name="dc.creator" content="Naselsky, P."> <meta name="dc.creator" content="Nati, F."> <meta name="dc.creator" content="Natoli, P."> <meta name="dc.creator" content="Netterfield, C. B."> <meta name="dc.creator" content="Nørgaard-Nielsen, H. U."> <meta name="dc.creator" content="Noviello, F."> <meta name="dc.creator" content="Novikov, D."> <meta name="dc.creator" content="Novikov, I."> <meta name="dc.creator" content="O'Dwyer, I. J."> <meta name="dc.creator" content="Osborne, S."> <meta name="dc.creator" content="Oxborrow, C. A."> <meta name="dc.creator" content="Paci, F."> <meta name="dc.creator" content="Pagano, L."> <meta name="dc.creator" content="Pajot, F."> <meta name="dc.creator" content="Paladini, R."> <meta name="dc.creator" content="Paoletti, D."> <meta name="dc.creator" content="Partridge, B."> <meta name="dc.creator" content="Pasian, F."> <meta name="dc.creator" content="Patanchon, G."> <meta name="dc.creator" content="Pearson, D."> <meta name="dc.creator" content="Pearson, T. J."> <meta name="dc.creator" content="Peiris, H. V."> <meta name="dc.creator" content="Perdereau, O."> <meta name="dc.creator" content="Perotto, L."> <meta name="dc.creator" content="Perrotta, F."> <meta name="dc.creator" content="Pettorino, V."> <meta name="dc.creator" content="Piacentini, F."> <meta name="dc.creator" content="Piat, M."> <meta name="dc.creator" content="Pierpaoli, E."> <meta name="dc.creator" content="Pietrobon, D."> <meta name="dc.creator" content="Plaszczynski, S."> <meta name="dc.creator" content="Platania, P."> <meta name="dc.creator" content="Pointecouteau, E."> <meta name="dc.creator" content="Polenta, G."> <meta name="dc.creator" content="Ponthieu, N."> <meta name="dc.creator" content="Popa, L."> <meta name="dc.creator" content="Poutanen, T."> <meta name="dc.creator" content="Pratt, G. W."> <meta name="dc.creator" content="Prézeau, G."> <meta name="dc.creator" content="Prunet, S."> <meta name="dc.creator" content="Puget, J. -L."> <meta name="dc.creator" content="Rachen, J. P."> <meta name="dc.creator" content="Reach, W. T."> <meta name="dc.creator" content="Rebolo, R."> <meta name="dc.creator" content="Reinecke, M."> <meta name="dc.creator" content="Remazeilles, M."> <meta name="dc.creator" content="Renault, C."> <meta name="dc.creator" content="Ricciardi, S."> <meta name="dc.creator" content="Riller, T."> <meta name="dc.creator" content="Ristorcelli, I."> <meta name="dc.creator" content="Rocha, G."> <meta name="dc.creator" content="Rosset, C."> <meta name="dc.creator" content="Roudier, G."> <meta name="dc.creator" content="Rowan-Robinson, M."> <meta name="dc.creator" content="Rubiño-Martín, J. A."> <meta name="dc.creator" content="Rusholme, B."> <meta name="dc.creator" content="Sandri, M."> <meta name="dc.creator" content="Santos, D."> <meta name="dc.creator" content="Savelainen, M."> <meta name="dc.creator" content="Savini, G."> <meta name="dc.creator" content="Scott, D."> <meta name="dc.creator" content="Seiffert, M. D."> <meta name="dc.creator" content="Shellard, E. P. S."> <meta name="dc.creator" content="Spencer, L. D."> <meta name="dc.creator" content="Starck, J. -L."> <meta name="dc.creator" content="Stolyarov, V."> <meta name="dc.creator" content="Stompor, R."> <meta name="dc.creator" content="Sudiwala, R."> <meta name="dc.creator" content="Sunyaev, R."> <meta name="dc.creator" content="Sureau, F."> <meta name="dc.creator" content="Sutton, D."> <meta name="dc.creator" content="Suur-Uski, A. -S."> <meta name="dc.creator" content="Sygnet, J. -F."> <meta name="dc.creator" content="Tauber, J. A."> <meta name="dc.creator" content="Tavagnacco, D."> <meta name="dc.creator" content="Terenzi, L."> <meta name="dc.creator" content="Toffolatti, L."> <meta name="dc.creator" content="Tomasi, M."> <meta name="dc.creator" content="Tristram, M."> <meta name="dc.creator" content="Tucci, M."> <meta name="dc.creator" content="Tuovinen, J."> <meta name="dc.creator" content="Türler, M."> <meta name="dc.creator" content="Umana, G."> <meta name="dc.creator" content="Valenziano, L."> <meta name="dc.creator" content="Valiviita, J."> <meta name="dc.creator" content="Van Tent, B."> <meta name="dc.creator" content="Vielva, P."> <meta name="dc.creator" content="Villa, F."> <meta name="dc.creator" content="Vittorio, N."> <meta name="dc.creator" content="Wade, L. A."> <meta name="dc.creator" content="Wandelt, B. D."> <meta name="dc.creator" content="Wehus, I. K."> <meta name="dc.creator" content="White, M."> <meta name="dc.creator" content="White, S. D. M."> <meta name="dc.creator" content="Wilkinson, A."> <meta name="dc.creator" content="Yvon, D."> <meta name="dc.creator" content="Zacchei, A."> <meta name="dc.creator" content="Zonca, A."> <!-- twitter card --> <meta name="twitter:card" content="summary_large_image"/> <meta name="twitter:description" content="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<SUB>∗</SUB> = (1.04147 ± 0.00062) × 10<SUP>-2</SUP>, Ω<SUB>b</SUB>h<SUP>2</SUP> = 0.02205 ± 0.00028, Ω<SUB>c</SUB>h<SUP>2</SUP> = 0.1199 ± 0.0027, and n<SUB>s</SUB> = 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, H<SUB>0</SUB> = (67.3 ± 1.2) km s<SUP>-1</SUP> Mpc<SUP>-1</SUP>, and a high value of the matter density parameter, Ω<SUB>m</SUB> = 0.315 ± 0.017. These values are in tension with recent direct measurements of H<SUB>0</SUB> 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 of r<SUB>0.002</SUB>&lt; 0.11 on the tensor-to-scalar ratio. There is no evidence for additional neutrino-like relativistic particles beyond the three families of neutrinos in the standard model. Using BAO and CMB data, we find N<SUB>eff</SUB> = 3.30 ± 0.27 for the effective number of relativistic degrees of freedom, and an upper limit of 0.23 eV for the sum of neutrino masses. Our results are in excellent agreement with big bang nucleosynthesis and the standard value of N<SUB>eff</SUB> = 3.046. We find no evidence for dynamical dark energy; using BAO and CMB data, the dark energy equation of state parameter is constrained to be w = -1.13<SUB>-0.10</SUB><SUP>+0.13</SUP>. We also use the Planck data to set limits on a possible variation of the fine-structure constant, dark matter annihilation and primordial magnetic fields. Despite the success of the six-parameter ΛCDM model in describing the Planck data at high multipoles, we note that this cosmology does not provide a good fit to the temperature power spectrum at low multipoles. The unusual shape of the spectrum in the multipole range 20 ≲ ℓ ≲ 40 was seen previously in the WMAP data and is a real feature of the primordial CMB anisotropies. The poor fit to the spectrum at low multipoles is not of decisive significance, but is an "anomaly" in an otherwise self-consistent analysis of the Planck temperature data."/> <meta name="twitter:title" content="Planck 2013 results. XVI. Cosmological parameters"/> <meta name="twitter:site" content="@adsabs"/> <meta name="twitter:domain" content="NASA/ADS"/> <meta name="twitter:image:src" content="https://ui.adsabs.harvard.edu/styles/img/transparent_logo.svg"/> <meta name="twitter:creator" content="@adsabs"/> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <base href="/"> <style> .btn-full-ads { color: #fff !important; background-color: #1a1a1a !important; border-color: #1a1a1a !important; margin-top: 9px !important; padding-bottom: 10px !important; padding-top: 10px !important; } .btn-full-ads:hover, .btn-full-ads:focus, .btn-full-ads:active, .btn-full-ads.active, .open>.dropdown-toggle.btn-full-ads { color: #000 !important; background-color: #ddd !important; border-color: #1a1a1a !important; } .dropdown-toggle:hover .dropdown-menu { display: block; } .navbar-nav.navbar-right:last-child { margin-right: -15px !important; } .navbar-right { @media screen (min-width: $screen-sm) { float: right!important; } } /*the container must be positioned relative:*/ .autocomplete { position: relative; display: inline-block; } .autocomplete-items { position: absolute; border: 1px solid #d4d4d4; border-bottom: none; border-top: none; z-index: 99; /*position the autocomplete items to be the same width as the container:*/ top: 100%; left: 0; right: 0; } .autocomplete-items div { padding: 10px; cursor: pointer; background-color: #fff; border-bottom: 1px solid #d4d4d4; } /*when hovering an item:*/ .autocomplete-items div:hover { background-color: #e9e9e9; } /*when navigating through the items using the arrow keys:*/ .autocomplete-active { background-color: #d7dfec !important; color: #000000; } </style> </head> <body> <div id="aria-announcement-container">Now on home page</div> <div id="app-container"> <div id="body-template-container"> <div class="s-master-page-manager"> <div id="navbar-container"> <div data-widget="NavbarWidget"> <nav class="navbar navbar-inverse"> <div class="container-fluid"> <!-- Brand and toggle get grouped for better mobile display --> <div class=""> <ul class="nav navbar-nav navbar-left"> <li> <a class="navbar-brand" href="/"> <img class="s-ads-icon" src="/styles/img/transparent_logo.svg" alt="ads icon"/> <h1> <b>ads</b></h1> </a> </li> </ul> </div> <!-- Collect the nav links, forms, and other content for toggling --> <div class=""> <!--<div class="nav navbar-nav navbar-right">--> <ul class="nav navbar-nav navbar-right"> <li data-match-route="/"> <a href="/core/never/abs/2014A%26A...571A..16P/abstract" style="transition: none; " class="btn btn-full-ads"> <i class="fa fa-refresh"></i> Enable full ADS </a> </li> </ul> </div> </div> </nav> </div> </div> <div id="content-container"> <div class="dynamic-container s-dynamic-container"> <div id="abstract-page-layout" class="s-abstract-page-layout"> <div class="row s-stable-search-bar-height s-results-control-row-container hidden-xs"> </div> <div class="row s-dynamic-page-body" id="dynamic-page-body"> <div class="s-abstract-content"> <div class="col-xs-12 col-sm-3 col-md-2" style="" id="left-column"> <div class="nav-container s-nav-container" style="transform: none; width: 100%; position: relative" id="left-column"> <nav> <div class="s-nav-header s-view-nav"> <i class="icon-list"></i> <h3>view </h3> </div> <a href="/abs/2014A%26A...571A..16P/abstract" data-widget-id="ShowAbstract"> <div class="abstract-nav s-nav s-nav-selected"> <span class="s-content"> Abstract </span> </div> </a> </a> <a href="/abs/2014A%26A...571A..16P/citations" aria-disabled="true" data-widget-id="ShowCitations"> <div class="abstract-nav s-nav "> <span class="s-content"> Citations <span class="num-items">(7993)</span> </span> </div> </a> <a href="/abs/2014A%26A...571A..16P/references" aria-disabled="true" data-widget-id="ShowReferences"> <div class="abstract-nav s-nav "> <span class="s-content"> References <span class="num-items">(351)</span> </span> </div> </a> <a href="/abs/2014A%26A...571A..16P/coreads" aria-disabled="true" aria-disabled="true" data-widget-id="ShowCoreads"> <div class="abstract-nav s-nav "> <span class="s-content"> Co-Reads </span> </div> </a> <a href="/abs/2014A%26A...571A..16P/similar" aria-disabled="true" data-widget-id="ShowSimilar"> <div class="abstract-nav s-nav "> <span class="s-content"> Similar Papers </span> </div> </a> <div aria-disabled="true" data-widget-id="ShowToc"> <div class="abstract-nav s-nav s-nav-inactive"> <span class="s-content"> Volume Content </span> </div> </div> <a href="/abs/2014A%26A...571A..16P/graphics" data-widget-id="ShowGraphics"> <div class="abstract-nav s-nav"> <span class="s-content"> Graphics </span> </div> </a> <a href="/abs/2014A%26A...571A..16P/metrics" data-widget-id="ShowMetrics"> <div class="abstract-nav s-nav"> <span class="s-content"> Metrics </span> </div> <a href="/abs/2014A%26A...571A..16P/exportcitation" data-widget-id="ShowExportcitation__default"> <div class="abstract-nav s-nav "> <span class="content"> Export Citation </span> </div> </a> </nav> </div> </div> <div class="col-xs-12 col-sm-8 col-md-7 col-lg-7 s-middle-column" id="middle-column" style="padding-bottom: 0%"> <!--id is for screen readers--> <div class="main-content-container s-main-content-container" id="main-content" tabindex="-1" style="margin-bottom: 5px"> <div class="print-visible"> <h2 style="margin-left:6.1%;">NASA/ADS</h2> </div> <div id="abstract-title-container" class="s-abstract-title-container"> <div data-widget="ShowAbstract"> <article class="s-abstract-metadata"> <!--<div id="article-navigation">|</div>--> <h2 class="s-abstract-title"> Planck 2013 results. XVI. Cosmological parameters <a href=""></a> </h2> <div id="authors-and-aff" class="s-authors-and-aff"> <ul class="list-inline"> <li class="author"><a href="/search/?q=author%3A%22Planck+Collaboration%22">Planck Collaboration</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Ade%2C+P.+A.+R.%22">Ade, P. A. R.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Aghanim%2C+N.%22">Aghanim, N.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Armitage-Caplan%2C+C.%22">Armitage-Caplan, C.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Arnaud%2C+M.%22">Arnaud, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Ashdown%2C+M.%22">Ashdown, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Atrio-Barandela%2C+F.%22">Atrio-Barandela, F.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Aumont%2C+J.%22">Aumont, J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Baccigalupi%2C+C.%22">Baccigalupi, C.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Banday%2C+A.+J.%22">Banday, A. J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Barreiro%2C+R.+B.%22">Barreiro, R. B.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bartlett%2C+J.+G.%22">Bartlett, J. G.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Battaner%2C+E.%22">Battaner, E.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Benabed%2C+K.%22">Benabed, K.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Beno%C3%AEt%2C+A.%22">Benoît, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Benoit-L%C3%A9vy%2C+A.%22">Benoit-Lévy, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bernard%2C+J.+-P.%22">Bernard, J. -P.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bersanelli%2C+M.%22">Bersanelli, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bielewicz%2C+P.%22">Bielewicz, P.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bobin%2C+J.%22">Bobin, J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bock%2C+J.+J.%22">Bock, J. J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bonaldi%2C+A.%22">Bonaldi, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bond%2C+J.+R.%22">Bond, J. R.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Borrill%2C+J.%22">Borrill, J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bouchet%2C+F.+R.%22">Bouchet, F. R.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bridges%2C+M.%22">Bridges, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Bucher%2C+M.%22">Bucher, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Burigana%2C+C.%22">Burigana, C.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Butler%2C+R.+C.%22">Butler, R. C.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Calabrese%2C+E.%22">Calabrese, E.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Cappellini%2C+B.%22">Cappellini, B.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Cardoso%2C+J.+-F.%22">Cardoso, J. -F.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Catalano%2C+A.%22">Catalano, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Challinor%2C+A.%22">Challinor, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Chamballu%2C+A.%22">Chamballu, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Chary%2C+R.+-R.%22">Chary, R. -R.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Chen%2C+X.%22">Chen, X.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Chiang%2C+H.+C.%22">Chiang, H. C.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Chiang%2C+L.+-Y.%22">Chiang, L. -Y.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Christensen%2C+P.+R.%22">Christensen, P. R.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Church%2C+S.%22">Church, S.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Clements%2C+D.+L.%22">Clements, D. L.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Colombi%2C+S.%22">Colombi, S.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Colombo%2C+L.+P.+L.%22">Colombo, L. P. L.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Couchot%2C+F.%22">Couchot, F.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Coulais%2C+A.%22">Coulais, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Crill%2C+B.+P.%22">Crill, B. P.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Curto%2C+A.%22">Curto, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Cuttaia%2C+F.%22">Cuttaia, F.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Danese%2C+L.%22">Danese, L.</a> </li> <li> <em>and 215 more</em> </li> </ul> </div> <div class="s-abstract-text"> <h4 class="sr-only">Abstract</h4> <p> 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<SUB>∗</SUB> = (1.04147 ± 0.00062) × 10<SUP>-2</SUP>, Ω<SUB>b</SUB>h<SUP>2</SUP> = 0.02205 ± 0.00028, Ω<SUB>c</SUB>h<SUP>2</SUP> = 0.1199 ± 0.0027, and n<SUB>s</SUB> = 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, H<SUB>0</SUB> = (67.3 ± 1.2) km s<SUP>-1</SUP> Mpc<SUP>-1</SUP>, and a high value of the matter density parameter, Ω<SUB>m</SUB> = 0.315 ± 0.017. These values are in tension with recent direct measurements of H<SUB>0</SUB> 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 of r<SUB>0.002</SUB>< 0.11 on the tensor-to-scalar ratio. There is no evidence for additional neutrino-like relativistic particles beyond the three families of neutrinos in the standard model. Using BAO and CMB data, we find N<SUB>eff</SUB> = 3.30 ± 0.27 for the effective number of relativistic degrees of freedom, and an upper limit of 0.23 eV for the sum of neutrino masses. Our results are in excellent agreement with big bang nucleosynthesis and the standard value of N<SUB>eff</SUB> = 3.046. We find no evidence for dynamical dark energy; using BAO and CMB data, the dark energy equation of state parameter is constrained to be w = -1.13<SUB>-0.10</SUB><SUP>+0.13</SUP>. We also use the Planck data to set limits on a possible variation of the fine-structure constant, dark matter annihilation and primordial magnetic fields. Despite the success of the six-parameter ΛCDM model in describing the Planck data at high multipoles, we note that this cosmology does not provide a good fit to the temperature power spectrum at low multipoles. The unusual shape of the spectrum in the multipole range 20 ≲ ℓ ≲ 40 was seen previously in the WMAP data and is a real feature of the primordial CMB anisotropies. The poor fit to the spectrum at low multipoles is not of decisive significance, but is an "anomaly" in an otherwise self-consistent analysis of the Planck temperature data. </p> </div> <br> <dl class="s-abstract-dl-horizontal"> <dt>Publication:</dt> <dd> <div id="article-publication">Astronomy and Astrophysics</div> </dd> <dt>Pub Date:</dt> <dd>November 2014</dd> <dt>DOI:</dt> <dd> <span> <a href="/link_gateway/2014A&A...571A..16P/doi:10.1051/0004-6361/201321591" target="_blank" rel="noopener">10.1051/0004-6361/201321591</a> <i class="fa fa-external-link"></i> </span> </dd> <dt>arXiv:</dt> <dd> <span> <a href="/link_gateway/2014A&A...571A..16P/arXiv:1303.5076" target="_blank" rel="noopener">arXiv:1303.5076</a> <i class="fa fa-external-link"></i> </span> </dd> <dt>Bibcode:</dt> <dd> <a href="/abs/2014A%26A...571A..16P/abstract"> 2014A&A...571A..16P </a> <i class="icon-help" title="The bibcode is assigned by the ADS as a unique identifier for the paper."></i> </dd> <dt>Keywords:</dt> <dd> <ul class="list-inline"> <li>cosmic background radiation;</li> <li>cosmological parameters;</li> <li>early Universe;</li> <li>inflation;</li> <li>primordial nucleosynthesis;</li> <li>Astrophysics - Cosmology and Nongalactic Astrophysics</li> </ul> </dd> <dt>E-Print:</dt> <dd> 69 pages. Matches version to appear in Astronomy &amp </dd> </dl> </article> </div> <div data-widget="ShowCitations"></div> <div data-widget="ShowReferences"></div> <div data-widget="ShowCoreads"></div> <div data-widget="ShowSimilar"></div> <div data-widget="ShowTableofcontents"></div> <div data-widget="ShowGraphics"></div> <div data-widget="ShowExportcitation" data-origin="abstract"></div> <div data-widget="ShowMetrics" data-allow-redirect="false"></div> <div data-widget="MetaTagsWidget"></div> </div> </div> </div> <div class="s-right-col-container col-xs-12 col-sm-12 col-md-3 col-lg-2 s-right-column" id="right-col-container" > <div data-widget="ShowResources"> <div data-reactroot="" class="s-right-col-widget-container" style="padding: 10px" > <div> <div class="resources__container"> <div class="resources__full__list"> <div class="resources__header__row"> <i class="fa fa-file-text-o" aria-hidden="true"> </i> <div class="resources__header__title">full text sources</div> </div> <div class="resources__content"> <div class="resources__content__title">Publisher</div> <div class="resources__content__links"> <span> <a href="/link_gateway/2014A&A...571A..16P/PUB_PDF" rel="noopener" class="resources__content__link unlock" > <i class="fa fa-file-pdf-o" aria-hidden="true"> </i> </a> <div class="resources__content__link__separator">|</div> </span> <span> <a href="/link_gateway/2014A&A...571A..16P/PUB_HTML" rel="noopener" class="resources__content__link unlock" > <i class="fa fa-file-text" aria-hidden="true"> </i> </a> </span> </div> </div> <div class="resources__content"> <div class="resources__content__title">arXiv</div> <div class="resources__content__links"> <span> <a href="/link_gateway/2014A&A...571A..16P/EPRINT_PDF" rel="noopener" class="resources__content__link unlock" > <i class="fa fa-file-pdf-o" aria-hidden="true"> </i> </a> <div class="resources__content__link__separator">|</div> </span> <span> <a href="/link_gateway/2014A&A...571A..16P/EPRINT_HTML" rel="noopener" class="resources__content__link unlock" > <i class="fa fa-file-text" aria-hidden="true"> </i> </a> </span> </div> </div> </div> <div class="resources__data__list"> <div class="resources__header__row"> <i class="fa fa-database"></i> <div class="resources__header__title">data products</div> </div> <div class="resources__content"> <a href="/link_gateway/2014A&A...571A..16P/SIMBAD" rel="noopener" class="resources__content__link" >SIMBAD (7)</a > </div> </div> </div> <div data-widget="ShowAssociated"> <div data-reactroot="" class="resources__container"> <div class="resources__header__row"> <i class="fa fa-folder-open"></i> <div class="resources__header__title"> Related Materials (30) </div> </div> <div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...1P/abstract" class="resources__content__link" >Part 1: 2014A&A...571A...1P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...2P/abstract" class="resources__content__link" >Part 2: 2014A&A...571A...2P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...3P/abstract" class="resources__content__link" >Part 3: 2014A&A...571A...3P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...4P/abstract" class="resources__content__link" >Part 4: 2014A&A...571A...4P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...5P/abstract" class="resources__content__link" >Part 5: 2014A&A...571A...5P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...6P/abstract" class="resources__content__link" >Part 6: 2014A&A...571A...6P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...7P/abstract" class="resources__content__link" >Part 7: 2014A&A...571A...7P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...8P/abstract" class="resources__content__link" >Part 8: 2014A&A...571A...8P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A...9P/abstract" class="resources__content__link" >Part 9: 2014A&A...571A...9P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..10P/abstract" class="resources__content__link" >Part 10: 2014A&A...571A..10P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..11P/abstract" class="resources__content__link" >Part 11: 2014A&A...571A..11P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..12P/abstract" class="resources__content__link" >Part 12: 2014A&A...571A..12P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..13P/abstract" class="resources__content__link" >Part 13: 2014A&A...571A..13P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..14P/abstract" class="resources__content__link" >Part 14: 2014A&A...571A..14P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..15P/abstract" class="resources__content__link" >Part 15: 2014A&A...571A..15P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..17P/abstract" class="resources__content__link" >Part 17: 2014A&A...571A..17P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..18P/abstract" class="resources__content__link" >Part 18: 2014A&A...571A..18P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..19P/abstract" class="resources__content__link" >Part 19: 2014A&A...571A..19P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..20P/abstract" class="resources__content__link" >Part 20: 2014A&A...571A..20P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..21P/abstract" class="resources__content__link" >Part 21: 2014A&A...571A..21P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..22P/abstract" class="resources__content__link" >Part 22: 2014A&A...571A..22P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..23P/abstract" class="resources__content__link" >Part 23: 2014A&A...571A..23P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..24P/abstract" class="resources__content__link" >Part 24: 2014A&A...571A..24P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..25P/abstract" class="resources__content__link" >Part 25: 2014A&A...571A..25P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..26P/abstract" class="resources__content__link" >Part 26: 2014A&A...571A..26P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..27P/abstract" class="resources__content__link" >Part 27: 2014A&A...571A..27P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..28P/abstract" class="resources__content__link" >Part 28: 2014A&A...571A..28P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..29P/abstract" class="resources__content__link" >Part 29: 2014A&A...571A..29P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..30P/abstract" class="resources__content__link" >Part 30: 2014A&A...571A..30P</a > </div> <div style=" font-size: 1em; border-left: 3px solid grey; padding-left: 5px; margin-left: 7px; " class="resources__content" > <a href="/abs/2014A%26A...571A..31P/abstract" class="resources__content__link" >Part 31: 2014A&A...571A..31P</a > </div> </div> </div> </div> </div> </div> </div> <div data-widget="ShowGraphicsSidebar"> <div class="s-graphics-sidebar graphics-sidebar"> <div class="s-right-col-widget-container"> <div class="graphics-container s-graphics-container"> <h4 class="s-right-col-widget-title">Graphics</h4> <div class="grid-cell"> <a href="/abs/2014A%26A...571A..16P/graphics" > <img src="https://s3.amazonaws.com/adsabs-thumbnails/seri/A%2BA/0571/aa21591-13/aa21591-13-fig1.jpg" alt="figure from paper" class="grid-cell__image" /> <p><i>Click to view more</i></p> </a> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div id="footer-container"> <div data-widget="FooterWidget"> <div class="footer s-footer"> <footer> <div class="__footer_wrapper"> <div class="__footer_brand"> © The SAO/NASA Astrophysics Data System <div class="__footer_brand_extra"> <p> <i class="fa fa-envelope"></i> adshelp[at]cfa.harvard.edu </p> <p> The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement <em>NNX16AC86A</em> </p> </div> <div class="__footer_brand_logos"> <a href="http://www.nasa.gov" target="_blank" rel="noopener"> <img src="/styles/img/nasa.svg" alt="NASA logo" id="nasa-logo"> </a> <a href="http://www.si.edu" target="_blank" rel="noopener"> <img id="smithsonian-logo" src="/styles/img/smithsonian.svg" alt="Smithsonian logo"> </a> <a href="https://www.cfa.harvard.edu/" target="_blank" rel="noopener"> <img src="/styles/img/cfa.png" title="Harvard Center for Astrophysics logo" id="cfa-logo"> </a> </div> </div> <div class="__footer_list"> <div class="__footer_list_title"> Resources </div> <ul class="__footer_links"> <li> <a href="/about/" target="_blank" rel="noopener"> <i class="fa fa-question-circle"></i> About ADS </a> </li> <li> <a href="//ui.adsabs.harvard.edu/help/" target="_blank" rel="noopener"> <i class="fa fa-info-circle"></i> ADS Help </a> </li> <li> <a href="//ui.adsabs.harvard.edu/help/whats_new/" target="_blank" rel="noopener"> <i class="fa fa-bullhorn"></i> What's New </a> </li> <li> <a href="/about/careers/" target="_blank" rel="noopener"> <i class="fa fa-group"></i> Careers@ADS </a> </li> </ul> </div> <div class="__footer_list"> <div class="__footer_list_title"> Social </div> <ul class="__footer_links"> <li> <a href="//twitter.com/adsabs" target="_blank" rel="noopener"> <i class="fa fa-twitter"></i> @adsabs </a> </li> <li> <a href="//ui.adsabs.harvard.edu/blog/" target="_blank" rel="noopener"> <i class="fa fa-newspaper-o"></i> ADS Blog </a> </li> </ul> </div> <div class="__footer_list"> <div class="__footer_list_title"> Project </div> <ul class="__footer_links"> <li> <a href="/core/never">Switch to full ADS</a> </li> <li> <a href="https://adsisdownorjustme.herokuapp.com/" target="_blank" rel="noopener">Is ADS down? (or is it just me...)</a> </li> <li> <a href="http://www.si.edu" target="_blank" rel="noopener">Smithsonian Institution</a> </li> <li> <a href="http://www.si.edu/Privacy" target="_blank" rel="noopener">Smithsonian Privacy Notice</a> </li> <li> <a href="http://www.si.edu/Termsofuse" target="_blank" rel="noopener">Smithsonian Terms of Use</a> </li> <li> <a href="http://www.cfa.harvard.edu/sao" target="_blank" rel="noopener">Smithsonian Astrophysical Observatory</a> </li> <li> <a href="http://www.nasa.gov" target="_blank" rel="noopener">NASA</a> </li> </ul> </div> </div> </footer> </div> </div> </div> </div> </div> </div> <div id="darkSwitch" class="darkmode-toggle hidden" title="Turn on dark mode">🌓</div> <script> function autocomplete(searchBox, autoValues) { // Arguments: the text field element and an array of possible autocompleted values var currentFocus; // selected autocomplete option // Function to be run when the user types searchBox.addEventListener("input", function(e) { var a, b, i, val = this.value; // close any list of autocomplete values closeAllLists(); if (!val) { return false;} val = val.split(/\s+/); val = val[val.length - 1]; if (!val) { return false;} currentFocus = -1; // Create a DIV element that will contain the items (values): a = document.createElement("DIV"); a.setAttribute("id", this.id + "autocomplete-list"); a.setAttribute("class", "autocomplete-items"); // Append the DIV element as a child of the autocomplete container: this.parentNode.appendChild(a); for (i = 0; i < autoValues.length; i++) { // Check if the item starts with the same letters as the text field value: if (autoValues[i].match.substr(0, val.length).toUpperCase() == val.toUpperCase()) { // Create a DIV element for each matching element: b = document.createElement("DIV"); b.innerHTML = autoValues[i].label; if ("desc" in autoValues[i]) { b.innerHTML += " <i>" + autoValues[i].desc + "</i>"; } if (autoValues[i].value.startsWith(autoValues[i].match) ) { b.innerHTML += " | <strong>" + autoValues[i].match.substr(0, val.length) + "</strong>"; b.innerHTML += autoValues[i].match.substr(val.length); } // Insert a input field that will hold the current array item's value: b.innerHTML += "<input type='hidden' value='" + autoValues[i].value + "'>"; // Listen to clicks on the item value (DIV element): b.addEventListener("click", function(e) { var terms = searchBox.value.split(/\s+/); // Remove the current part of the input used for matching terms.pop(); // Insert the value for the autocomplete text field: terms.push(this.getElementsByTagName("input")[0].value); searchBox.value = terms.join(" "); // Move cursor position inside quotes/parenthesis if needed searchBox.focus(); if (searchBox.value[searchBox.value.length-1] === '"' || searchBox.value[searchBox.value.length-1] === ')') { searchBox.setSelectionRange(searchBox.value.length-1, searchBox.value.length-1); } // Close the list of autocompleted values closeAllLists(); }); a.appendChild(b); } } if (a.children.length > 0) { // By default, enter will select the first entry currentFocus = 0; addActive(a.children); } }); /*execute a function presses a key on the keyboard:*/ searchBox.addEventListener("keydown", function(e) { var x = document.getElementById(this.id + "autocomplete-list"); if (x) x = x.getElementsByTagName("div"); if (e.keyCode == 40) { // If the arrow DOWN key is pressed, increase the currentFocus variable: currentFocus++; addActive(x); } else if (e.keyCode == 38) { //up // If the arrow UP key is pressed, decrease the currentFocus variable: currentFocus--; /*and and make the current item more visible:*/ addActive(x); } else if (e.keyCode == 13) { // If the ENTER key is pressed: if (currentFocus > -1) { // Prevent the form from being submitted: e.preventDefault(); // Simulate a click on the "active" item: if (x) x[currentFocus].click(); currentFocus = -1; } } }); function addActive(x) { // Classify an item as "active": if (!x) return false; // Remove the "active" class on all items: removeActive(x); if (currentFocus >= x.length) currentFocus = 0; if (currentFocus < 0) currentFocus = (x.length - 1); // Add class "autocomplete-active": x[currentFocus].classList.add("autocomplete-active"); } function removeActive(x) { // Remove the "active" class from all autocomplete items: for (var i = 0; i < x.length; i++) { x[i].classList.remove("autocomplete-active"); } } function closeAllLists(elmnt) { // Close all autocomplete lists in the document, except the one passed as an argument: var x = document.getElementsByClassName("autocomplete-items"); for (var i = 0; i < x.length; i++) { if (elmnt != x[i] && elmnt != searchBox) { x[i].parentNode.removeChild(x[i]); } } } // Any other clicks in the document: document.addEventListener("click", function (e) { closeAllLists(e.target); }); } var autoList = [ { value: 'author:""', label: 'Author', match: 'author:"' }, { value: 'author:"^"', label: 'First Author', match: 'first author' }, { value: 'author:"^"', label: 'First Author', match: 'author:"^' }, { value: 'bibcode:""', label: 'Bibcode', desc: 'e.g. bibcode:1989ApJ...342L..71R', match: 'bibcode:"' }, { value: 'bibstem:""', label: 'Publication', desc: 'e.g. bibstem:ApJ', match: 'bibstem:"' }, { value: 'bibstem:""', label: 'Publication', desc: 'e.g. bibstem:ApJ', match: 'publication (bibstem)' }, { value: 'arXiv:', label: 'arXiv ID', match: 'arxiv:' }, { value: 'doi:', label: 'DOI', match: 'doi:' }, { value: 'full:""', label: 'Full text search', desc: 'title, abstract, and body', match: 'full:' }, { value: 'full:""', label: 'Full text search', desc: 'title, abstract, and body', match: 'fulltext' }, { value: 'full:""', label: 'Full text search', desc: 'title, abstract, and body', match: 'text' }, { value: 'year:', label: 'Year', match: 'year' }, { value: 'year:1999-2005', label: 'Year Range', desc: 'e.g. 1999-2005', match: 'year range' }, { value: 'aff:""', label: 'Affiliation', match: 'aff:' }, { value: 'abs:""', label: 'Search abstract + title + keywords', match: 'abs:' }, { value: 'database:astronomy', label: 'Limit to papers in the astronomy database', match: 'database:astronomy' }, { value: 'database:physics', label: 'Limit to papers in the physics database', match: 'database:physics' }, { value: 'title:""', label: 'Title', match: 'title:"' }, { value: 'orcid:', label: 'ORCiD identifier', match: 'orcid:' }, { value: 'object:', label: 'SIMBAD object (e.g. object:LMC)', match: 'object:' }, { value: 'property:refereed', label: 'Limit to refereed', desc: '(property:refereed)', match: 'refereed' }, { value: 'property:refereed', label: 'Limit to refereed', desc: '(property:refereed)', match: 'property:refereed' }, { value: 'property:notrefereed', label: 'Limit to non-refereed', desc: '(property:notrefereed)', match: 'property:notrefereed' }, { value: 'property:notrefereed', label: 'Limit to non-refereed', desc: '(property:notrefereed)', match: 'notrefereed' }, { value: 'property:eprint', label: 'Limit to eprints', desc: '(property:eprint)', match: 'eprint' }, { value: 'property:eprint', label: 'Limit to eprints', desc: '(property:eprint)', match: 'property:eprint' }, { value: 'property:openaccess', label: 'Limit to open access', desc: '(property:openaccess)', match: 'property:openaccess' }, { value: 'property:openaccess', label: 'Limit to open access', desc: '(property:openaccess)', match: 'openaccess' }, { value: 'doctype:software', label: 'Limit to software', desc: '(doctype:software)', match: 'software' }, { value: 'doctype:software', label: 'Limit to software', desc: '(doctype:software)', match: 'doctype:software' }, { value: 'property:inproceedings', label: 'Limit to papers in conference proceedings', desc: '(property:inproceedings)', match: 'proceedings' }, { value: 'property:inproceedings', label: 'Limit to papers in conference proceedings', desc: '(property:inproceedings)', match: 'property:inproceedings' }, { value: 'citations()', label: 'Citations', desc: 'Get papers citing your search result set', match: 'citations(' }, { value: 'references()', label: 'References', desc: 'Get papers referenced by your search result set', match: 'references(' }, { value: 'trending()', label: 'Trending', desc: 'Get papers most read by users who recently read your search result set', match: 'trending(' }, { value: 'reviews()', label: 'Review Articles', desc: 'Get most relevant papers that cite your search result set', match: 'reviews(' }, { value: 'useful()', label: 'Useful', desc: 'Get papers most frequently cited by your search result set', match: 'useful(' }, { value: 'similar()', label: 'Similar', desc: 'Get papers that have similar full text to your search result set', match: 'similar(' }, ]; // initiate the autocomplete function on the "q" element, and pass along the operators array as possible autocomplete values: inputBox = document.getElementById("q") if (inputBox) { inputBox.focus() // autofucs inputBox.setSelectionRange(inputBox.value.length, inputBox.value.length); // bring cursor to the end autocomplete(inputBox, autoList); } </script> <script> (function() { // turn off no-js if we have javascript document.documentElement.className = document.documentElement.className.replace("no-js", "js"); function getCookie(cname) { var name = cname + "="; var decodedCookie = decodeURIComponent(document.cookie); var ca = decodedCookie.split(';'); for (var i = 0; i < ca.length; i++) { var c = ca[i]; while (c.charAt(0) == ' ') { c = c.substring(1); } if (c.indexOf(name) == 0) { return c.substring(name.length, c.length); } } return ""; } (function() { // looks for the cookie, and sets true if its 'always' const coreCookie = getCookie('core') === 'always'; // only load bumblebee if we detect the core cookie and we are on abstract page if (coreCookie || (!(/^\/abs\//.test(document.location.pathname)) && !coreCookie)) { return; } window.__PRERENDERED = true; const addScript = function(args, cb) { const script = document.createElement('script'); Object.keys(args).forEach((key) => { script.setAttribute(key, args[key]); }); script.onload = function() { cb && cb(script); }; document.body.appendChild(script); } window.require = { waitSeconds: 0, baseUrl: '/' }; addScript({ src: '/libs/require.js' }, () => { addScript({ src: '/config/shim.js' }); }); })(); })(); </script> </body> </html>