• DOI:10.1051/0004-6361/201936386
• Corpus ID: 249920423

Planck 2018 results: V. CMB power spectra and likelihoods

@article{Aghanim2020Planck2R,
  title={Planck 2018 results: V. CMB power spectra and likelihoods},
  author={Nabila Aghanim and Yashar Akrami and Mark Ashdown and J. Aumont and Carlo Baccigalupi and Mario Ballardini and Mario Ballardini and Anthony J. Banday and Rita Bel{\'e}n Barreiro and Nicola Bartolo and Soumen Basak and Karim Benabed and J-Ph. Bernard and M. Bersanelli and Pawel Bielewicz and James J. Bock and J. Richard Bond and Julian Borrill and Franois R. Bouchet and F. Boulanger and Manfred Bucher and Carlo Burigana and R. C. Butler and Erminia Calabrese and Jean-François Cardoso and Julien Carron and B. Casaponsa and Anthony Challinor and H. C. Chiang and Loris P. L. Colombo and C{\'e}line Combet and Brendan P. Crill and F. Cuttaia and Paolo Bernardis and Adriano de Rosa and Gianfranco De Zotti and Jacques Delabrouille and Jean‐Marc Delouis and Eleonora Di Valentino and Jose Maria Diego and O. Dor{\'e} and M. Douspis and Anne Ducout and Xavier Dupac and Stefano Dusini and George P. Efstathiou and Franz Elsner and Torsten A. Ensslin and Hans Kristian Eriksen and Y. Fantaye and Ra{\'u}l Fern{\'a}ndez-Cobos and Fabio Finelli and Marco Frailis and Aur'elien A. Fraisse and Enrico Franceschi and Andrei V. Frolov and S. Galeotta and Silvia Galli and Ken Ganga and Ricardo G{\'e}nova-Santos and Martina Gerbino and Tuhin Ghosh and Yannick Giraud-H{\'e}raud and Joaqu{\'i}n Gonz{\'a}lez-Nuevo and Krzysztof M. Gorski and Steven Gratton and Alessandro Gruppuso and Jon E. Gudmundsson and Jan Hamann and William Bruce. Handley and F. K. Hansen and Diego Herranz and Eric Hivon and Zhiqi Huang and Andrew H. Jaffe and William C. Jones and Elina Keih{\"a}nen and Reijo Keskitalo and Kimmo Kiiveri and Jae-Young Kim and Theodore Kisner and Nicoletta Krachmalnicoff and Martin Kunz and Hannu Kurki-Suonio and Guilaine Lagache and J-M. Lamarre and Anthony Lasenby and Massimiliano Lattanzi and Charles R. Lawrence and Maude Le Jeune and François Levrier and Antony Lewis and Michele Liguori and Per B. Lilje and Mks Lilley and V. Lindholm and Marcos L{\'o}pez-Caniego and Philip Lubin and Yin-Zhe Ma and J. F. Mac{\'i}as-P{\'e}rez and Gianmarco Maggio and Davide Maino and Nazzareno Mandolesi and Anna Mangilli and Airam Marcos-Caballero and Michele Maris and Peter Martin and Enrique Mart{\'i}nez-Gonz{\'a}lez and Sabino Matarrese and Nicoletta Mauri and Jason D. McEwen and Peter Meinhold and Alessandro Melchiorri and Aniello Mennella and Marina Migliaccio and Marius Millea and Marc-Antoine Miville-Desch{\^e}nes and Diego Molinari and Andrea Moneti and Laurent Montier and Gianluca Morgante and Adam G. Moss and Paolo Natoli and Hans Ulrik N{\o}rgaard-Nielsen and Luca Pagano and Daniela Paoletti and Bruce Partridge and Guillaume Patanchon and Hiranya V. Peiris and Francesca Perrotta and Valeria Pettorino and Francesco Piacentini and Gianluca Polenta and J-L. Puget and Jorg P. Rachen and Martin Reinecke and Mathieu Remazeilles and Alessandro Renzi and Graca M. Rocha and C. Dutruc Rosset and Gael M. Roudier and Jos{\'e} Alberto Rubi{\~n}o-Mart{\'i}n and Beatriz Ruiz-Granados and Laura Salvati and M. Sandri and Matti Savelainen and Matti Savelainen and Douglas Scott and E. P. S. Shellard and C. Sirignano and G. Sirri and Locke D. Spencer and Rashid A. Sunyaev and A.-S. Suur-Uski and Jan Tauber and Daniele Tavagnacco and M. Tenti and Luisa Toffolatti and Maurizio Tomasi and Tiziana Trombetti and Jussi Valiviita and Bartjan van Tent and Patricio Vielva and Fabrizio Villa and Nicola Di Vittorio and Benjamin D. Wandelt and Ingunn Kathrine Wehus and Andrea Zacchei and Andrea Zonca},
  journal={Astronomy and Astrophysics},
  year={2020},
  volume={641},
  pages={1-92}
}

• N. Aghanim, Y. Akrami, +166 authors A. Zonca
• Published 11 September 2020
• Physics
• Astronomy and Astrophysics

Author(s): Aghanim, N; Akrami, Y; Ashdown, M; Aumont, J; Baccigalupi, C; Ballardini, M; Banday, AJ; Barreiro, RB; Bartolo, N; Basak, S; Benabed, K; Bernard, JP; Bersanelli, M; Bielewicz, P; Bock, JJ; Bond, JR; Borrill, J; Bouchet, FR; Boulanger, F; Bucher, M; Burigana, C; Butler, RC; Calabrese, E; Cardoso, JF; Carron, J; Casaponsa, B; Challinor, A; Chiang, HC; Colombo, LPL; Combet, C; Crill, BP; Cuttaia, F; De Bernardis, P; De Rosa, A; De Zotti, G; Delabrouille, J; Delouis, JM; Di Valentino, E; Diego, JM; Dore, O; Douspis, M; Ducout, A; Dupac, X; Dusini, S; Efstathiou, G; Elsner, F; Enslin, TA; Eriksen, HK; Fantaye, Y; Fernandez-Cobos, R; Finelli, F; Frailis, M; Fraisse, AA; Franceschi, E; Frolov, A; Galeotta, S; Galli, S; Ganga, K; Genova-Santos, RT; Gerbino, M; Ghosh, T; Giraud-Heraud, Y; Gonzalez-Nuevo, J; Gorski, KM; Gratton, S; Gruppuso, A; Gudmundsson, JE; Hamann, J; Handley, W; Hansen, FK; Herranz, D; Hivon, E; Huang, Z; Jaffe, AH; Jones, WC; Keihanen, E; Keskitalo, R; Kiiveri, K; Kim, J; Kisner, TS; Krachmalnicoff, N; Kunz, M; Kurki-Suonio, H; Lagache, G; Lamarre, JM | Abstract: © 2020 EDP Sciences. All rights reserved. We describe the legacy Planck cosmic microwave background (CMB) likelihoods derived from the 2018 data release. The overall approach is similar in spirit to the one retained for the 2013 and 2015 data release, with a hybrid method using different approximations at low (l l 30) and high (l ≥ 30) multipoles, implementing several methodological and data-analysis refinements compared to previous releases. With more realistic simulations, and better correction and modelling of systematic effects, we can now make full use of the CMB polarization observed in the High Frequency Instrument (HFI) channels. The low-multipole EE cross-spectra from the 100 GHz and 143 GHz data give a constraint on the λCDM reionization optical-depth parameter τ to better than 15% (in combination with the TT low-l data and the high-l temperature and polarization data), tightening constraints on all parameters with posterior distributions correlated with τ. We also update the weaker constraint on τ from the joint TEB likelihood using the Low Frequency Instrument (LFI) channels, which was used in 2015 as part of our baseline analysis. At higher multipoles, the CMB temperature spectrum and likelihood are very similar to previous releases. A better model of the temperature-to-polarization leakage and corrections for the effective calibrations of the polarization channels (i.e., the polarization efficiencies) allow us to make full use of polarization spectra, improving the λCDM constraints on the parameters θMC, ωc, ωb, and H0 by more than 30%, and ns by more than 20% compared to TT-only constraints. Extensive tests on the robustness of the modelling of the polarization data demonstrate good consistency, with some residual modelling uncertainties. At high multipoles, we are now limited mainly by the accuracy of the polarization efficiency modelling. Using our various tests, simulations, and comparison between different high-multipole likelihood implementations, we estimate the consistency of the results to be better than the 0.5σ level on the λCDM parameters, as well as classical single-parameter extensions for the joint likelihood (to be compared to the 0.3σ levels we achieved in 2015 for the temperature data alone on λCDM only). Minor curiosities already present in the previous releases remain, such as the differences between the best-fit λCDM parameters for the l l 800 and l g 800 ranges of the power spectrum, or the preference for more smoothing of the power-spectrum peaks than predicted in λCDM fits. These are shown to be driven by the temperature power spectrum and are not significantly modified by the inclusion of the polarization data. Overall, the legacy Planck CMB likelihoods provide a robust tool for constraining the cosmological model and represent a reference for future CMB observations.