UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Planck 2018 results: I. Overview and the cosmological legacy of Planck

Aghanim, N; Akrami, Y; Arroja, F; Ashdown, M; Aumont, J; Baccigalupi, C; Ballardini, M; ... Zonca, A; + view all (2020) Planck 2018 results: I. Overview and the cosmological legacy of Planck. Astronomy & Astrophysics , 641 , Article A1. 10.1051/0004-6361/201833880. Green open access

[thumbnail of aa33880-18.pdf] Text
aa33880-18.pdf - Published Version
Available under License : See the attached licence file.

Download (26MB)

Abstract

The European Space Agency’s Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 and 23 October 2013, producing deep, high-resolution, all-sky maps in nine frequency bands from 30 to 857 GHz. This paper presents the cosmological legacy of Planck, which currently provides our strongest constraints on the parameters of the standard cosmological model and some of the tightest limits available on deviations from that model. The 6-parameter ΛCDM model continues to provide an excellent fit to the cosmic microwave background data at high and low redshift, describing the cosmological information in over a billion map pixels with just six parameters. With 18 peaks in the temperature and polarization angular power spectra constrained well, Planck measures five of the six parameters to better than 1% (simultaneously), with the best-determined parameter (θ*) now known to 0.03%. We describe the multi-component sky as seen by Planck, the success of the ΛCDM model, and the connection to lower-redshift probes of structure formation. We also give a comprehensive summary of the major changes introduced in this 2018 release. The Planck data, alone and in combination with other probes, provide stringent constraints on our models of the early Universe and the large-scale structure within which all astrophysical objects form and evolve. We discuss some lessons learned from the Planck mission, and highlight areas ripe for further experimental advances.

Type: Article
Title: Planck 2018 results: I. Overview and the cosmological legacy of Planck
Open access status: An open access version is available from UCL Discovery
DOI: 10.1051/0004-6361/201833880
Publisher version: https://doi.org/10.1051/0004-6361/201833880
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Astronomy & Astrophysics, cosmology: observations, cosmology: theory, cosmic background radiation, surveys, PROBE WMAP OBSERVATIONS, ANGULAR POWER SPECTRUM, MICROWAVE BACKGROUND POLARIZATION, BARYON ACOUSTIC-OSCILLATIONS, MULTIBAND IMAGING PHOTOMETER, MAIN GALAXY SAMPLE, COMPONENT SEPARATION, DARK ENERGY, PARAMETER CONSTRAINTS, LENSING TOMOGRAPHY
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10110084
Downloads since deposit
8Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item