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

Marika Asgari; Chieh-An Lin; Benjamin Joachimi; Benjamin Giblin; Catherine Heymans; Hendrik Hildebrandt; Arun Kannawadi; Benjamin Stölzner; Tilman Tröster; Jan Luca van den Busch; Angus H. Wright; Maciej Bilicki; Chris Blake; Jelte de Jong; Andrej Dvornik; Thomas Erben; Fedor Getman; Henk Hoekstra; Fabian Köhlinger; Konrad Kuijken; Lance Miller; Mario Radovich; Peter Schneider; HuanYuan Shan; Edwin Valentijn

doi:10.1051/0004-6361/202039070

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

Marika Asgari, Chieh-An Lin, Benjamin Joachimi, Benjamin Giblin, Catherine Heymans, Hendrik Hildebrandt, Arun Kannawadi, Benjamin Stölzner, Tilman Tröster, Jan Luca van den Busch, Angus H. Wright, Maciej Bilicki, Chris Blake, Jelte de Jong, Andrej Dvornik, Thomas Erben, Fedor Getman, Henk Hoekstra, Fabian Köhlinger, Konrad KuijkenLance Miller, Mario Radovich, Peter Schneider, HuanYuan Shan, Edwin Valentijn

School of Physics and Astronomy

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Abstract / Description of output

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 ΛCDM model, we find S8=σ8(Ωm/0.3)0.5=0.759+0.024−0.021 for our fiducial analysis, which is in 3σ 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 S8 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.

Original language	English
Article number	A104
Pages (from-to)	1-31
Number of pages	31
Journal	Astronomy and Astrophysics
Volume	645
Early online date	13 Oct 2020
DOIs	https://doi.org/10.1051/0004-6361/202039070
Publication status	Published - 22 Jan 2021

Keywords / Materials (for Non-textual outputs)

astro-ph.CO

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10.1051/0004-6361/202039070

2007.15633v2Accepted author manuscript, 3.86 MB

https://arxiv.org/abs/2007.15633

GLOBE: Global Lensing Observations to go Beyond Einstein (027451/1)
Heymans, C.
EU government bodies
1/11/15 → 31/10/21
Project: Research

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Asgari, M., Lin, C.-A., Joachimi, B., Giblin, B., Heymans, C., Hildebrandt, H., Kannawadi, A., Stölzner, B., Tröster, T., Busch, J. L. V. D., Wright, A. H., Bilicki, M., Blake, C., Jong, J. D., Dvornik, A., Erben, T., Getman, F., Hoekstra, H., Köhlinger, F., ... Valentijn, E. (2021). KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics. Astronomy and Astrophysics, 645, 1-31. Article A104. https://doi.org/10.1051/0004-6361/202039070

@article{13d847ef1a6a4a45a5845708d2440bdb,

title = "KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics",

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 ΛCDM model, we find S8=σ8(Ωm/0.3)0.5=0.759+0.024−0.021 for our fiducial analysis, which is in 3σ 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 S8 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.",

keywords = "astro-ph.CO",

author = "Marika Asgari and Chieh-An Lin and Benjamin Joachimi and Benjamin Giblin and Catherine Heymans and Hendrik Hildebrandt and Arun Kannawadi and Benjamin St{\"o}lzner and Tilman Tr{\"o}ster and Busch, {Jan Luca van den} and Wright, {Angus H.} and Maciej Bilicki and Chris Blake and Jong, {Jelte de} and Andrej Dvornik and Thomas Erben and Fedor Getman and Henk Hoekstra and Fabian K{\"o}hlinger and Konrad Kuijken and Lance Miller and Mario Radovich and Peter Schneider and HuanYuan Shan and Edwin Valentijn",

note = "33 pages, 14 figures, 7 tables, Accepted to be published in A&A. This paper is part of the KiDS-1000 series of papers: Heymans, Tr\{"}oster et al. (arXiv:2007.15632), Hildebrandt et al. (arXiv:2007.15635), Joachimi et al. (arXiv:2007.01844) and Giblin et al. (arXiv:2007.01845). Online KiDS-1000 talks can be viewed at http://kids.strw.leidenuniv.nl/KiDS-1000.php or the KiDS Consortium youtube page",

year = "2021",

month = jan,

day = "22",

doi = "10.1051/0004-6361/202039070",

language = "English",

volume = "645",

pages = "1--31",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Asgari, M, Lin, C-A, Joachimi, B, Giblin, B, Heymans, C, Hildebrandt, H, Kannawadi, A, Stölzner, B, Tröster, T, Busch, JLVD, Wright, AH, Bilicki, M, Blake, C, Jong, JD, Dvornik, A, Erben, T, Getman, F, Hoekstra, H, Köhlinger, F, Kuijken, K, Miller, L, Radovich, M, Schneider, P, Shan, H & Valentijn, E 2021, 'KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics', Astronomy and Astrophysics, vol. 645, A104, pp. 1-31. https://doi.org/10.1051/0004-6361/202039070

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 - Busch, Jan Luca van den

AU - Wright, Angus H.

AU - Bilicki, Maciej

AU - Blake, Chris

AU - Jong, Jelte de

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

N1 - 33 pages, 14 figures, 7 tables, Accepted to be published in A&A. This paper is part of the KiDS-1000 series of papers: Heymans, Tr\"oster et al. (arXiv:2007.15632), Hildebrandt et al. (arXiv:2007.15635), Joachimi et al. (arXiv:2007.01844) and Giblin et al. (arXiv:2007.01845). Online KiDS-1000 talks can be viewed at http://kids.strw.leidenuniv.nl/KiDS-1000.php or the KiDS Consortium youtube page

PY - 2021/1/22

Y1 - 2021/1/22

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 ΛCDM model, we find S8=σ8(Ωm/0.3)0.5=0.759+0.024−0.021 for our fiducial analysis, which is in 3σ 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 S8 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 ΛCDM model, we find S8=σ8(Ωm/0.3)0.5=0.759+0.024−0.021 for our fiducial analysis, which is in 3σ 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 S8 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 - astro-ph.CO

U2 - 10.1051/0004-6361/202039070

DO - 10.1051/0004-6361/202039070

M3 - Article

SN - 0004-6361

VL - 645

SP - 1

EP - 31

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A104

ER -

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

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GLOBE: Global Lensing Observations to go Beyond Einstein (027451/1)

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