articleAstronomy and AstrophysicsNov 26, 2019HYBRID OA

Planck 2018 results

NAN. AghanimYAY. AkramiMAM. AshdownJAJ. AumontCBC. Baccigalupi

Centre National de la Recherche Scientifique · École Normale Supérieure - PSL · +38 more institutions

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Abstract

We present measurements of the cosmic microwave background (CMB) lensing potential using the final Planck 2018 temperature and polarization data. Using polarization maps filtered to account for the noise anisotropy, we increase the significance of the detection of lensing in the polarization maps from 5 σ to 9 σ . Combined with temperature, lensing is detected at 40 σ . We present an extensive set of tests of the robustness of the lensing-potential power spectrum, and construct a minimum-variance estimator likelihood over lensing multipoles 8 ≤ L ≤ 400 (extending the range to lower L compared to 2015), which we use to constrain cosmological parameters. We find good consistency between lensing constraints and…

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Authors

158
  • NA
    N. AghanimCorresponding
  • YA
    Y. Akrami

    Centre National de la Recherche Scientifique, École Normale Supérieure - PSL

  • MA
    M. Ashdown

    University of Cambridge

  • JA
    J. Aumont
  • CB
    C. Baccigalupi

Topics & keywords

Keywords
  • Cosmic microwave background
  • Weak gravitational lensing
  • Strong gravitational lensing
  • Spectral density
  • Galaxy
  • Gravitational lensing formalism
  • Dark energy
  • Polarization (electrochemistry)
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