Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters
Planck Collaboration: et al.
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/170624 |
| Acceso en línea: | http://hdl.handle.net/10261/170624 |
| Access Level: | acceso abierto |
| Palabra clave: | Cosmology: theory Cosmic background radiation Cosmological parameters Cosmology: observations |
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| dc.title.none.fl_str_mv |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters |
| title |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters |
| spellingShingle |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters Aghanim, N. Cosmology: theory Cosmic background radiation Cosmological parameters Cosmology: observations |
| title_short |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters |
| title_full |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters |
| title_fullStr |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters |
| title_full_unstemmed |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters |
| title_sort |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parameters |
| dc.creator.none.fl_str_mv |
Aghanim, N. Ashdown, Mark Aumont, Jonathan Baccigalupi, Carlo Banday, A. J. Barreiro, R. Belén Bartolo, Nicola Wehus, I. K. Zacchei, A. Borrill, Julian Bouchet, F. R. Boulanger, F. Bracco, Andrea Burigana, C. Eriksen, H. K. Chiang, H. C. Colombo, L.P.L. Crill, B. P. Kisner, T. S. Curto, Andrés Rosa, A. de Zotti, G. de Delabrouille, Jacques Dickinson, C. Diego, José María Mennella, A. Doré, O. Finelli, F. Ganga, K. Génova-Santos, R. González-Nuevo, J. Górski, K. M. Gruppuso, Alessandro Gudmundsson, Jon E. Krachmalnicof, Nicoletta Herranz, Diego Jaffe, A. H. Keskitalo, R. Kunz, M. Lagache, Guilaine Lasenby, Anthony N. Lawrence, C. R. Levrier, F. Liguori, Michele Rocha, G. López-Caniego, M. Macías-Pérez, J. F. Maino, D. Mandolesi, N. Maris, M. Bonaldi, Anna Martínez-González, Enrique Matarrese, S. Miville-Deschênes, M. A. Molinari, D. Montier, L. Bersanelli, Marco Rossetti, M. Moss, A. Pagano, L. Paoletti, Daniela Partridge, Bruce Patanchon, Guillaume Puget, J.-L. Rachen, J. P. Reinecke, Martin Remazeilles, Mathieu Rubiño-Martín, J. A. Ruiz-Granados, Beatriz Efstathiou, G. Scott, Douglas Bonavera, Laura Tauber, J. A. Toffolatti, Luigi Tomasi, M. Tristram, M. Trombetti, T. Bond, J. R. Vielva, Patricio |
| author |
Aghanim, N. |
| author_facet |
Aghanim, N. Ashdown, Mark Aumont, Jonathan Baccigalupi, Carlo Banday, A. J. Barreiro, R. Belén Bartolo, Nicola Wehus, I. K. Zacchei, A. Borrill, Julian Bouchet, F. R. Boulanger, F. Bracco, Andrea Burigana, C. Eriksen, H. K. Chiang, H. C. Colombo, L.P.L. Crill, B. P. Kisner, T. S. Curto, Andrés Rosa, A. de Zotti, G. de Delabrouille, Jacques Dickinson, C. Diego, José María Mennella, A. Doré, O. Finelli, F. Ganga, K. Génova-Santos, R. González-Nuevo, J. Górski, K. M. Gruppuso, Alessandro Gudmundsson, Jon E. Krachmalnicof, Nicoletta Herranz, Diego Jaffe, A. H. Keskitalo, R. Kunz, M. Lagache, Guilaine Lasenby, Anthony N. Lawrence, C. R. Levrier, F. Liguori, Michele Rocha, G. López-Caniego, M. Macías-Pérez, J. F. Maino, D. Mandolesi, N. Maris, M. Bonaldi, Anna Martínez-González, Enrique Matarrese, S. Miville-Deschênes, M. A. Molinari, D. Montier, L. Bersanelli, Marco Rossetti, M. Moss, A. Pagano, L. Paoletti, Daniela Partridge, Bruce Patanchon, Guillaume Puget, J.-L. Rachen, J. P. Reinecke, Martin Remazeilles, Mathieu Rubiño-Martín, J. A. Ruiz-Granados, Beatriz Efstathiou, G. Scott, Douglas Bonavera, Laura Tauber, J. A. Toffolatti, Luigi Tomasi, M. Tristram, M. Trombetti, T. Bond, J. R. Vielva, Patricio |
| author_role |
author |
| author2 |
Ashdown, Mark Aumont, Jonathan Baccigalupi, Carlo Banday, A. J. Barreiro, R. Belén Bartolo, Nicola Wehus, I. K. Zacchei, A. Borrill, Julian Bouchet, F. R. Boulanger, F. Bracco, Andrea Burigana, C. Eriksen, H. K. Chiang, H. C. Colombo, L.P.L. Crill, B. P. Kisner, T. S. Curto, Andrés Rosa, A. de Zotti, G. de Delabrouille, Jacques Dickinson, C. Diego, José María Mennella, A. Doré, O. Finelli, F. Ganga, K. Génova-Santos, R. González-Nuevo, J. Górski, K. M. Gruppuso, Alessandro Gudmundsson, Jon E. Krachmalnicof, Nicoletta Herranz, Diego Jaffe, A. H. Keskitalo, R. Kunz, M. Lagache, Guilaine Lasenby, Anthony N. Lawrence, C. R. Levrier, F. Liguori, Michele Rocha, G. López-Caniego, M. Macías-Pérez, J. F. Maino, D. Mandolesi, N. Maris, M. Bonaldi, Anna Martínez-González, Enrique Matarrese, S. Miville-Deschênes, M. A. Molinari, D. Montier, L. Bersanelli, Marco Rossetti, M. Moss, A. Pagano, L. Paoletti, Daniela Partridge, Bruce Patanchon, Guillaume Puget, J.-L. Rachen, J. P. Reinecke, Martin Remazeilles, Mathieu Rubiño-Martín, J. A. Ruiz-Granados, Beatriz Efstathiou, G. Scott, Douglas Bonavera, Laura Tauber, J. A. Toffolatti, Luigi Tomasi, M. Tristram, M. Trombetti, T. Bond, J. R. Vielva, Patricio |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Fundação para a Ciência e a Tecnologia (Portugal) European Research Council European Commission Ministerio de Economía, Industria y Competitividad (España) Consejo Superior de Investigaciones Científicas (España) Department of Energy (US) NASA Consiglio Nazionale delle Ricerche Istituto Nazionale di Astrofisica Agenzia Spaziale Italiana Centre National D'Etudes Spatiales (France) Centre National de la Recherche Scientifique (France) European Space Agency Science and Technology Facilities Council (UK) Ministério da Ciência, Tecnologia e Ensino Superior (Portugal) Science Foundation Ireland Swiss Space Office DTU Space (Denmark) Canadian Space Agency Federal Ministry of Education and Research (Germany) German Research Foundation Academy of Finland Center for Science (Finland) Red Española de Supercomputación Research Council of Norway Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Cosmology: theory Cosmic background radiation Cosmological parameters Cosmology: observations |
| topic |
Cosmology: theory Cosmic background radiation Cosmological parameters Cosmology: observations |
| description |
Planck Collaboration: et al. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017 2018 2018 2018 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/170624 |
| url |
http://hdl.handle.net/10261/170624 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
https://doi.org/10.1051/0004-6361/201629504 Sí |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
EDP Sciences |
| publisher.none.fl_str_mv |
EDP Sciences |
| dc.source.none.fl_str_mv |
reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
| instname_str |
Consejo Superior de Investigaciones Científicas (CSIC) |
| reponame_str |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869421243728396288 |
| spelling |
Planck intermediate results LI. Features in the cosmic microwave background temperature power spectrum and shifts in cosmological parametersAghanim, N.Ashdown, MarkAumont, JonathanBaccigalupi, CarloBanday, A. J.Barreiro, R. BelénBartolo, NicolaWehus, I. K.Zacchei, A.Borrill, JulianBouchet, F. R.Boulanger, F.Bracco, AndreaBurigana, C.Eriksen, H. K.Chiang, H. C.Colombo, L.P.L.Crill, B. P.Kisner, T. S.Curto, AndrésRosa, A. deZotti, G. deDelabrouille, JacquesDickinson, C.Diego, José MaríaMennella, A.Doré, O.Finelli, F.Ganga, K.Génova-Santos, R.González-Nuevo, J.Górski, K. M.Gruppuso, AlessandroGudmundsson, Jon E.Krachmalnicof, NicolettaHerranz, DiegoJaffe, A. H.Keskitalo, R.Kunz, M.Lagache, GuilaineLasenby, Anthony N.Lawrence, C. R.Levrier, F.Liguori, MicheleRocha, G.López-Caniego, M.Macías-Pérez, J. F.Maino, D.Mandolesi, N.Maris, M.Bonaldi, AnnaMartínez-González, EnriqueMatarrese, S.Miville-Deschênes, M. A.Molinari, D.Montier, L.Bersanelli, MarcoRossetti, M.Moss, A.Pagano, L.Paoletti, DanielaPartridge, BrucePatanchon, GuillaumePuget, J.-L.Rachen, J. P.Reinecke, MartinRemazeilles, MathieuRubiño-Martín, J. A.Ruiz-Granados, BeatrizEfstathiou, G.Scott, DouglasBonavera, LauraTauber, J. A.Toffolatti, LuigiTomasi, M.Tristram, M.Trombetti, T.Bond, J. R.Vielva, PatricioCosmology: theoryCosmic background radiationCosmological parametersCosmology: observationsPlanck Collaboration: et al.The six parameters of the standard ΛCDM model have best-fit values derived from the Planck temperature power spectrum that are shifted somewhat from the best-fit values derived from WMAP data. These shifts are driven by features in the Planck temperature power spectrum at angular scales that had never before been measured to cosmic-variance level precision. We have investigated these shifts to determine whether they are within the range of expectation and to understand their origin in the data. Taking our parameter set to be the optical depth of the reionized intergalactic medium τ, the baryon density ωb, the matter density ωm, the angular size of the sound horizon θ∗, the spectral index of the primordial power spectrum, ns, and Ase− 2τ (where As is the amplitude of the primordial power spectrum), we have examined the change in best-fit values between a WMAP-like large angular-scale data set (with multipole moment ℓ < 800 in the Planck temperature power spectrum) and an all angular-scale data set (ℓ < 2500Planck temperature power spectrum), each with a prior on τ of 0.07 ± 0.02. We find that the shifts, in units of the 1σ expected dispersion for each parameter, are { Δτ,ΔAse− 2τ,Δns,Δωm,Δωb,Δθ∗ } = { −1.7,−2.2,1.2,−2.0,1.1,0.9 }, with a χ2 value of 8.0. We find that this χ2 value is exceeded in 15% of our simulated data sets, and that a parameter deviates by more than 2.2σ in 9% of simulated data sets, meaning that the shifts are not unusually large. Comparing ℓ < 800 instead to ℓ> 800, or splitting at a different multipole, yields similar results. We examined the ℓ < 800 model residuals in the ℓ> 800 power spectrum data and find that the features there that drive these shifts are a set of oscillations across a broad range of angular scales. Although they partly appear similar to the effects of enhanced gravitational lensing, the shifts in ΛCDM parameters that arise in response to these features correspond to model spectrum changes that are predominantly due to non-lensing effects; the only exception is τ, which, at fixed Ase− 2τ, affects the ℓ> 800 temperature power spectrum solely through the associated change in As and the impact of that on the lensing potential power spectrum. We also ask, “what is it about the power spectrum at ℓ < 800 that leads to somewhat different best-fit parameters than come from the full ℓ range?” We find that if we discard the data at ℓ < 30, where there is a roughly 2σ downward fluctuation in power relative to the model that best fits the full ℓ range, the ℓ < 800 best-fit parameters shift significantly towards the ℓ < 2500 best-fit parameters. In contrast, including ℓ < 30, this previously noted “low-ℓ deficit” drives ns up and impacts parameters correlated with ns, such as ωm and H0. As expected, the ℓ < 30 data have a much greater impact on the ℓ < 800 best fit than on the ℓ < 2500 best fit. So although the shifts are not very significant, we find that they can be understood through the combined effects of an oscillatory-like set of high-ℓ residuals and the deficit in low-ℓ power, excursions consistent with sample variance that happen to map onto changes in cosmological parameters. Finally, we examine agreement between PlanckTT data and two other CMB data sets, namely the Planck lensing reconstruction and the TT power spectrum measured by the South Pole Telescope, again finding a lack of convincing evidence of any significant deviations in parameters, suggesting that current CMB data sets give an internally consistent picture of the ΛCDM model.The Planck Collaboration acknowledges the support of: ESA; CNES, and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MINECO, JA, and RES (Spain); Tekes, AoF, and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); ERC and PRACE (EU). This work was also supported by the Labex ILP (reference ANR-10-LABX-63).Peer reviewedPeer ReviewedEDP SciencesFundação para a Ciência e a Tecnologia (Portugal)European Research CouncilEuropean CommissionMinisterio de Economía, Industria y Competitividad (España)Consejo Superior de Investigaciones Científicas (España)Department of Energy (US)NASAConsiglio Nazionale delle RicercheIstituto Nazionale di AstrofisicaAgenzia Spaziale ItalianaCentre National D'Etudes Spatiales (France)Centre National de la Recherche Scientifique (France)European Space AgencyScience and Technology Facilities Council (UK)Ministério da Ciência, Tecnologia e Ensino Superior (Portugal)Science Foundation IrelandSwiss Space OfficeDTU Space (Denmark)Canadian Space AgencyFederal Ministry of Education and Research (Germany)German Research FoundationAcademy of FinlandCenter for Science (Finland)Red Española de SupercomputaciónResearch Council of NorwayConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2018201820172018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/170624reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1051/0004-6361/201629504Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1706242026-05-22T06:33:51Z |
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15,808905 |