Статья

KiDS-1000 cosmology: Cosmic shear constraints and comparison between two point statistics

Marika AsgariInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKChieh-An LinInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKB. JoachimiDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKBenjamin GiblinInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKCatherine HeymansInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKH. HildebrandtRuhr-University Bochum, Astronomical Institute, German Centre for Cosmological Lensing, Universittsstr. 150, 44801 Bochum, GermanyArun KannawadiDepartment of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USABenjamin StölznerDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKTilman TrösterInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKJan Luca van den BuschRuhr-University Bochum, Astronomical Institute, German Centre for Cosmological Lensing, Universittsstr. 150, 44801 Bochum, GermanyAngus H. WrightRuhr-University Bochum, Astronomical Institute, German Centre for Cosmological Lensing, Universittsstr. 150, 44801 Bochum, GermanyMaciej BilickiCenter for Theoretical Physics, Polish Academy of Sciences, al. Lotnikw 32/46, 02-668 Warsaw, PolandChris BlakeCentre for Astrophysics & Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, AustraliaJ. T. A. de JongKapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The NetherlandsAndrej DvornikRuhr-University Bochum, Astronomical Institute, German Centre for Cosmological Lensing, Universittsstr. 150, 44801 Bochum, GermanyT. ErbenArgelander-Institut fr Astronomie, Auf dem Hgel 71, 53121 Bonn, GermanyF. GetmanINAF -Astronomical Observatory of Capodimonte, Via Moiariello 16, 80131 Napoli, ItalyHenk HoekstraLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The NetherlandsF. KöhlingerRuhr-University Bochum, Astronomical Institute, German Centre for Cosmological Lensing, Universitätsstr. 150, 44801 Bochum, GermanyKonrad KuijkenLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The NetherlandsL. MillerDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UKM. RadovichINAF -Osservatorio Astronomico di Padova, via dell'Osservatorio 5, 35122 Padova, ItalyPeter SchneiderArgelander-Institut fr Astronomie, Auf dem Hgel 71, 53121 Bonn, GermanyHuanyuan ShanShanghai Astronomical Observatory (SHAO), Nandan Road 80, Shanghai 200030, PR ChinaE. A. ValentijnKapteyn Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands

2020en

ABI

Аннотация

We present cosmological constraints from a cosmic shear analysis of the fourth data release of the Kilo-Degree Survey (KiDS-1000), which doubles the survey area with nine-band optical and near-infrared photometry with respect to previous KiDS analyses. Adopting a spatially flat standard cosmological model, we find S 8 = σ 8 (Ω m /0.3) 0.5 = 0.759 −0.021 +0.024 for our fiducial analysis, which is in 3 σ tension with the prediction of the Planck Legacy analysis of the cosmic microwave background. We compare our fiducial COSEBIs (Complete Orthogonal Sets of E/B-Integrals) analysis with complementary analyses of the two-point shear correlation function and band power spectra, finding the results to be in excellent agreement. We investigate the sensitivity of all three statistics to a number of measurement, astrophysical, and modelling systematics, finding our S 8 constraints to be robust and dominated by statistical errors. Our cosmological analysis of different divisions of the data passes the Bayesian internal consistency tests, with the exception of the second tomographic bin. As this bin encompasses low-redshift galaxies, carrying insignificant levels of cosmological information, we find that our results are unchanged by the inclusion or exclusion of this sample.

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Идентификаторы

DOI: 10.1051/0004-6361/202039070

Цитирования и источники

Цитирований: 3Использованных источников: 0

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