Статья

KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints

Catherine HeymansInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKTilman TrösterMarika AsgariInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKChris BlakeCentre for Astrophysics & Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, AustraliaHendrik HildebrandtRuhr-Universitt Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universittsstr. 150, 44801 Bochum, GermanyBenjamin 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 LinInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKAriel G. SánchezJan Luca van den BuschRuhr-Universitt Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universittsstr. 150, 44801 Bochum, GermanyAngus H. WrightRuhr-Universitt Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universittsstr. 150, 44801 Bochum, GermanyAlexandra AmonKavli Institute for Particle Astrophysics & Cosmology, Stanford University, PO Box 2450, Stanford, CA 94305, USAMaciej BilickiCenter for Theoretical Physics, Polish Academy of Sciences, Al. Lotnikw 32/46, 02-668 Warsaw, PolandJelte de JongKapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The NetherlandsMartin CrocceInstitut d'Estudis Espacials de Catalunya (IEEC), Carrer Gran Capita 2, 08034 Barcelona, SpainAndrej DvornikRuhr-Universitt Bochum, Astronomisches Institut, German Centre for Cosmological Lensing (GCCL), Universittsstr. 150, 44801 Bochum, GermanyThomas ErbenArgelander-Institut fr Astronomie, Universitt Bonn, Auf dem Hgel 71, 53121 Bonn, GermanyMaria Cristina FortunaLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The NetherlandsFedor GetmanINAF -Astronomical Observatory of Capodimonte, Via Moiariello 16, 80131 Napoli, ItalyBenjamin GiblinInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKKarl 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 KannawadiDepartment of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USAFabian KöhlingerChris LidmanResearch School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2600, AustraliaLance MillerDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UKNicola 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 fr Astronomie, Universitt Bonn, Auf dem Hgel 71, 53121 Bonn, GermanyHuanYuan ShanShanghai Astronomical Observatory (SHAO), Nandan Road 80, Shanghai 200030, PR ChinaEdwin 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

Аннотация

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. 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 = σ 8 √(Ω m /0.3) = 0.766 −0.014 +0.020 , 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, σ 8 . 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 ∼3 σ , when considering the offset in S 8 , and ∼2 σ , when considering the full multi-dimensional parameter space.

Идентификаторы

DOI: 10.1051/0004-6361/202039063

Цитирования и источники

Цитирований: 7Использованных источников: 0

Показатели — AkademScholar · Скоро