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Catherine HeymansSchool of Physics and AstronomyTilman TrösterSchool of Physics and AstronomyMarika AsgariSchool of Physics and AstronomyChris BlakeCentre for Astrophysics & Supercomputing, Swinburne University of Technology, PO Box 218 Hawthorn, VIC 3122, AustraliaH. HildebrandtRuhr-Universität Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universitätsstr. 150, 44801 Bochum, GermanyB. JoachimiDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKKonrad KuijkenLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The NetherlandsChieh-An LinSchool of Physics and AstronomyAriel G. SánchezMax-Planck-Institut für Extraterrestrische Physik, Postfach 1312, Giessenbachstrasse 1, 85741 Garching, GermanyJan Luca van den BuschRuhr-Universität Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universitätsstr. 150, 44801 Bochum, GermanyAngus H. WrightRuhr-Universität Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universitätsstr. 150, 44801 Bochum, GermanyA. AmonKavli Institute for Particle Astrophysics & Cosmology, Stanford University, PO Box 2450, Stanford, CA 94305, USAMaciej BilickiCenter for Theoretical Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, PolandJ. T. A. de JongKapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The NetherlandsM. CrocceInstitute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, 08193 Barcelona, SpainAndrej DvornikRuhr-Universität Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universitätsstr. 150, 44801 Bochum, GermanyT. ErbenArgelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, GermanyMaria Cristina FortunaLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The NetherlandsF. GetmanINAF – Astronomical Observatory of Capodimonte, Via Moiariello 16, 80131 Napoli, ItalyBenjamin GiblinSchool of Physics and AstronomyKarl GlazebrookCentre for Astrophysics & Supercomputing, Swinburne University of Technology, PO Box 218 Hawthorn, VIC 3122, AustraliaHenk HoekstraLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The NetherlandsShahab JoudakiDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UKArun KannawadiLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The NetherlandsF. KöhlingerRuhr-Universität Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universitätsstr. 150, 44801 Bochum, GermanyC. LidmanResearch School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2600, AustraliaL. MillerDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UKN. R. NapolitanoUniversity of Chinese Academy of Sciences, Beijing 100049, PR ChinaDavid ParkinsonKorea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of KoreaPeter SchneiderArgelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, GermanyHuanyuan ShanShanghai Astronomical Observatory (SHAO), Nandan Road 80, Shanghai 200030, PR ChinaE. A. ValentijnKapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The NetherlandsGijs Verdoes KleijnKapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The NetherlandsChristian WolfResearch School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2600, Australia

2020en

ABI

Annotatsiya

We present a joint cosmological analysis of weak gravitational lensing observations from the Kilo-Degree Survey (KiDS-1000), with redshift-space galaxy clustering observations from the Baryon Oscillation Spectroscopic Survey (BOSS) and galaxy-galaxy lensing observations from the overlap between KiDS-1000, BOSS, and the spectroscopic 2-degree Field Lensing Survey (2dFLenS). This combination of large-scale structure probes breaks the degeneracies between cosmological parameters for individual observables, resulting in a constraint on the structure growth parameter S 8 = σ8 √ Ωm/0.3 = 0.766+0.020 −0.014, which has the same overall precision as that reported by the full-sky cosmic microwave background observations from Planck. The recovered S 8 amplitude is low, however, by 8.3 ± 2.6% relative to Planck. This result builds from a series of KiDS-1000 analyses where we validate our methodology with variable depth mock galaxy surveys, our lensing calibration with image simulations and null-tests, and our optical-to-near-infrared redshift calibration with multi-band mock catalogues and a spectroscopic-photometric clustering analysis. The systematic uncertainties identified by these analyses are folded through as nuisance parameters in our cosmological analysis. Inspecting the offset between the marginalised posterior distributions, we find that the S 8-difference with Planck is driven by a tension in the matter fluctuation amplitude parameter, σ8. We quantify the level of agreement between the cosmic microwave background and our large-scale structure constraints using a series of different metrics, finding differences with a significance ranging between ∼ 3σ, when considering the offset in S 8, and ∼2σ, when considering the full multi-dimensional parameter space.

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