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DES Y3 + KiDS-1000: Consistent Cosmology Combining Cosmic Shear SurveysWe present a joint cosmic shear analysis of the Dark Energy Survey (DES Y3) and the Kilo-Degree Survey (KiDS-1000) in a collaborative effort between the two survey teams. We find consistent cosmological parameter constraints between DES Y3 and KiDS-1000 which, when combined in a joint-survey analysis, constrain the parameter S88√(Ωm/0.3) with a mean value of 0.790 +0.018−0.014.The mean marginal is lower than the maximum a posteriori estimate, S8=0.801, owing to skewness in the marginal distribution and projection effects in the multi-dimensional parameter space. Our results are consistent with S8 constraints from observations of the cosmic microwave background by Planck, with agreement at the 1.7σ level. We use a Hybrid analysis pipeline, defined from a mock survey study quantifying the impact of the different analysis choices originally adopted by each survey team. We review intrinsic alignment models, baryon feedback mitigation strategies, priors, samplers and models of the non-linear matter power spectrum.
Document ID
20240002603
Acquisition Source
Goddard Space Flight Center
Document Type
Accepted Manuscript (Version with final changes)
Authors
T. M. C. Abbott
(Cerro Tololo Inter-American Observatory La Serena, Chile)
M. Aguena ORCID
(Laboratório Interinstitucional de e-Astronomia Rio de Janeiro, Brazil)
A. Alarcon
(Omitron (United States) Beltsville, Maryland, United States)
O. Alves
(Argonne National Laboratory Lemont, United States)
A. Amon
(University of Cambridge Cambridge, United Kingdom)
F. Andrade-Oliveira
(University of Michigan–Ann Arbor Ann Arbor, United States)
M. Asgari
(University of Hull Hull, United Kingdom)
S. Avila
(Barcelona Institute for Science and Technology Barcelona, Spain)
D. Bacon
(University of Portsmouth Portsmouth, Portsmouth, United Kingdom)
K. Bechtol
(University of Wisconsin–Madison Madison, United States)
M. R. Becker
(Argonne National Laboratory Lemont, United States)
G. M. Bernstein ORCID
(University of Pennsylvania Philadelphia, Pennsylvania, United States)
E. Bertin ORCID
(Institut d'Astrophysique de Paris Paris, France)
M. Bilicki
(Polish Academy of Sciences Warsaw, Poland)
J. Blazek
(Northeastern University Boston, United States)
S. Bocquet
(Ludwig-Maximilians-Universität München Munich, Germany)
D. Brooks
(University College London London, United Kingdom)
P. Burger
(University of Bonn Bonn, Germany)
D. L. Burke
(Kavli Institute for Particle Astrophysics and Cosmology Menlo Park, California, United States)
H. Camacho
(Universidade Estadual Paulista (Unesp) São Paulo, Brazil)
A. Campos
(Carnegie Mellon University Pittsburgh, United States)
A. Carnero Rosell ORCID
(Laboratório Interinstitucional de e-Astronomia Rio de Janeiro, Brazil)
M. Carrasco Kind ORCID
(National Center for Supercomputing Applications Urbana, United States)
J. Carretero
(Barcelona Institute for Science and Technology Barcelona, Spain)
F. J. Castander
(Institut d'Estudis Espacials de Catalunya Barcelona, Spain)
R. Cawthon
(William Jewell College Liberty, Missouri, United States)
C. Chang
(University of Chicago Chicago, United States)
R. Chen
(Duke University Durham, United States)
A. Choi
(Goddard Space Flight Center Greenbelt, United States)
C. Conselice
(University of Nottingham Nottingham, Nottingham, United Kingdom)
J. Cordero
(University of Manchester Manchester, United Kingdom)
M. Crocce ORCID
(Institut d'Estudis Espacials de Catalunya Barcelona, Spain)
L. N. da Costa ORCID
(Laboratório Interinstitucional de e-Astronomia Rio de Janeiro, Brazil)
M. E. da Silva Pereira
(Universität Hamburg Hamburg, Germany)
R. Dalal
(Princeton University Princeton, United States)
Date Acquired
February 28, 2024
Publication Date
October 20, 2023
Publication Information
Publication: Open Journal of Astrophysics
Publisher: Maynooth Academic Publishing
Volume: 6
Issue Publication Date: October 20, 2023
ISSN: 2565-6120
Subject Category
Astrophysics
Funding Number(s)
WBS: 134180
CONTRACT_GRANT: 80GSFC19C0072
CONTRACT_GRANT: ERC 647112
CONTRACT_GRANT: ERC 770935
CONTRACT_GRANT: STFC ST/V000594/1
CONTRACT_GRANT: STFC ST/V000780/1
CONTRACT_GRANT: NWO 621.016.402
CONTRACT_GRANT: NWO 639.043.512
CONTRACT_GRANT: PNSC 2020/38/E/ST9/00395
CONTRACT_GRANT: PNSC 2018/30/E/ST9/00698
CONTRACT_GRANT: PNSC 2018/31/G/ST9/03388
CONTRACT_GRANT: PNSC 2020/39/B/ST9/03494
CONTRACT_GRANT: PMS HE DIR/WK/2018/12
CONTRACT_GRANT: NSF DGE-2039656
CONTRACT_GRANT: RS RGF/EA/181006
CONTRACT_GRANT: SEC Fellowship 1914
CONTRACT_GRANT: DFG 1495/5-1
CONTRACT_GRANT: DFG SFB1491
CONTRACT_GRANT: DOE DE-SC0010118
CONTRACT_GRANT: SF 620789
CONTRACT_GRANT: NSFC 12150710511
CONTRACT_GRANT: CMSCSST-2021-A01
CONTRACT_GRANT: NSF AST-2206563
CONTRACT_GRANT: CMS-CSST-2021-A01
CONTRACT_GRANT: CMS-CSST-2021-A04
CONTRACT_GRANT: NSFC 11973070
CONTRACT_GRANT: CAS ZDBS-LY-7013
CONTRACT_GRANT: FONDECYT 11191125
PROJECT: BASAL FB210003
CONTRACT_GRANT: SNSF PZ00P2_193352
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Technical Review
Professional Review
Keywords
cosmology
weak gravitation lensing
Dark Energy Survey
DES
Kilo-Degree Survey
KIDS
cosmological parameters
cosmic shear
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