Planck 2018 results. VI. Cosmological parameters
N. Aghanim, Y. Akrami, M. Ashdown · Planck Collaboration (N. Aghanim et al.); large multi-institution collaboration.
Summary
This paper presents the cosmological parameter constraints from the final (2018) Planck satellite analysis of cosmic microwave background temperature and polarization anisotropies plus lensing. The data are well fit by a six-parameter flat Lambda-CDM model, yielding precise values for the matter density, baryon density, and other parameters. The inferred Hubble constant from the CMB is in tension with local distance-ladder measurements.
Key findings
- Base Lambda-CDM provides an excellent fit to the final Planck CMB data.
- Yields a CMB-inferred Hubble constant of about 67.4 km/s/Mpc, in tension with local measurements.
- Delivers high-precision constraints on matter density, baryon density, and the amplitude/tilt of primordial fluctuations.
Subjects & keywords
Cite this paper
N. Aghanim, Y. Akrami, & M. Ashdown [Planck Collaboration (N. Aghanim et al.); large multi-institution collaboration.] (2020). Planck 2018 results. VI. Cosmological parameters. Astronomy & Astrophysics. https://doi.org/10.1051/0004-6361/201833910
@article{aghanim2020planck,
author = {N. Aghanim and Y. Akrami and M. Ashdown and {Planck Collaboration (N. Aghanim et al.); large multi-institution collaboration.}},
title = {Planck 2018 results. VI. Cosmological parameters},
journal = {Astronomy & Astrophysics},
year = {2020},
doi = {10.1051/0004-6361/201833910},
url = {https://doi.org/10.1051/0004-6361/201833910}
}