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 $Łambda$CDM model, we find
$S_8 = \sigma_8 (Ømega_m/0.3)^0.5 = 0.759^+0.024_-0.021$ 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.
Description
KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
cite arxiv:2007.15633Comment: 32 pages, 12 figures, 6 tables, submitted to A&A. This paper is part of the KiDS-1000 series of papers, accompanying Heymans, Tröster et al. and Hildebrandt et al. appearing on the arXiv today, joining Joachimi et al. (arXiv:2007.01844) and Giblin et al. (arXiv:2007.01845). Online KiDS-1000 talks and seminars can be viewed at http://kids.strw.leidenuniv.nl/KiDS-1000.php
%0 Generic
%1 asgari2020kids1000
%A Asgari, Marika
%A Lin, Chieh-An
%A Joachimi, Benjamin
%A Giblin, Benjamin
%A Heymans, Catherine
%A Hildebrandt, Hendrik
%A Kannawadi, Arun
%A Stölzner, Benjamin
%A Tröster, Tilman
%A Busch, Jan Luca van den
%A Wright, Angus H.
%A Bilicki, Maciej
%A Blake, Chris
%A de Jong, Jelte
%A Dvornik, Andrej
%A Erben, Thomas
%A Getman, Fedor
%A Hoekstra, Henk
%A Köhlinger, Fabian
%A Kuijken, Konrad
%A Miller, Lance
%A Radovich, Mario
%A Schneider, Peter
%A Shan, HuanYuan
%D 2020
%K library
%T KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two
point statistics
%U http://arxiv.org/abs/2007.15633
%X 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 $Łambda$CDM model, we find
$S_8 = \sigma_8 (Ømega_m/0.3)^0.5 = 0.759^+0.024_-0.021$ 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.
@misc{asgari2020kids1000,
abstract = {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.},
added-at = {2020-07-31T13:36:25.000+0200},
author = {Asgari, Marika and Lin, Chieh-An and Joachimi, Benjamin and Giblin, Benjamin and Heymans, Catherine and Hildebrandt, Hendrik and Kannawadi, Arun and Stölzner, Benjamin and Tröster, Tilman and Busch, Jan Luca van den and Wright, Angus H. and Bilicki, Maciej and Blake, Chris and de Jong, Jelte and Dvornik, Andrej and Erben, Thomas and Getman, Fedor and Hoekstra, Henk and Köhlinger, Fabian and Kuijken, Konrad and Miller, Lance and Radovich, Mario and Schneider, Peter and Shan, HuanYuan},
biburl = {https://www.bibsonomy.org/bibtex/25c62ea30c68e954b067c9175c835a1ef/gpkulkarni},
description = {KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics},
interhash = {cf68889a95ce7d9df4580b7d921622af},
intrahash = {5c62ea30c68e954b067c9175c835a1ef},
keywords = {library},
note = {cite arxiv:2007.15633Comment: 32 pages, 12 figures, 6 tables, submitted to A&A. This paper is part of the KiDS-1000 series of papers, accompanying Heymans, Tr\"oster et al. and Hildebrandt et al. appearing on the arXiv today, joining Joachimi et al. (arXiv:2007.01844) and Giblin et al. (arXiv:2007.01845). Online KiDS-1000 talks and seminars can be viewed at http://kids.strw.leidenuniv.nl/KiDS-1000.php},
timestamp = {2020-07-31T13:36:25.000+0200},
title = {KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two
point statistics},
url = {http://arxiv.org/abs/2007.15633},
year = 2020
}