TY - JOUR
T1 - KiDS-1000 Cosmology
T2 - Cosmic shear constraints and comparison between two point statistics
AU - Asgari, Marika
AU - Lin, Chieh-An
AU - Joachimi, Benjamin
AU - Giblin, Benjamin
AU - Heymans, Catherine
AU - Hildebrandt, Hendrik
AU - Kannawadi, Arun
AU - Stölzner, Benjamin
AU - Tröster, Tilman
AU - van den Busch, Jan Luca
AU - Wright, Angus H.
AU - Bilicki, Maciej
AU - Blake, Chris
AU - de Jong, Jelte
AU - Dvornik, Andrej
AU - Erben, Thomas
AU - Getman, Fedor
AU - Hoekstra, Henk
AU - Köhlinger, Fabian
AU - Kuijken, Konrad
AU - Miller, Lance
AU - Radovich, Mario
AU - Schneider, Peter
AU - Shan, HuanYuan
AU - Valentijn, Edwin
PY - 2021/1
Y1 - 2021/1
N2 - We present cosmological constraints from a cosmic shear analysis of the
fourth data release of the Kilo-Degree Survey (KiDS-1000), doubling the
survey area with nine-band optical and near-infrared photometry with
respect to previous KiDS analyses. Adopting a spatially flat
$\Lambda$CDM model, we find $S_8 = \sigma_8 (\Omega_{\rm m}/0.3)^{0.5} =
0.759^{+0.024}_{-0.021}$ for our fiducial analysis, which is in
$3\sigma$ 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 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 pass 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.
AB - We present cosmological constraints from a cosmic shear analysis of the
fourth data release of the Kilo-Degree Survey (KiDS-1000), doubling the
survey area with nine-band optical and near-infrared photometry with
respect to previous KiDS analyses. Adopting a spatially flat
$\Lambda$CDM model, we find $S_8 = \sigma_8 (\Omega_{\rm m}/0.3)^{0.5} =
0.759^{+0.024}_{-0.021}$ for our fiducial analysis, which is in
$3\sigma$ 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 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 pass 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.
KW - gravitational lensing: weak
KW - methods: observational
KW - cosmology: observations
KW - large-scale structure of Universe
KW - cosmological parameters
KW - CHALLENGE LIGHTCONE SIMULATION
KW - POWER SPECTRUM
KW - PARAMETER CONSTRAINTS
KW - DARK-MATTER
KW - WEAK
KW - CFHTLENS
KW - KIDS-450
KW - GALAXIES
KW - ESTIMATORS
KW - MODEL
U2 - 10.1051/0004-6361/202039070
DO - 10.1051/0004-6361/202039070
M3 - Article
SN - 0004-6361
VL - 645
JO - Astronomy & Astrophysics
JF - Astronomy & Astrophysics
M1 - A104
ER -