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DES Y3 + KIDS-1000: CONSISTENT COSMOLOGY COMBINING COSMIC SHEAR SURVEYS

Publication ,  Journal Article
Abbott, TMC; Aguena, M; Alarcon, A; Alves, O; Amon, A; Andrade-Oliveira, F; Asgari, M; Avila, S; Bacon, D; Bechtol, K; Becker, MR; Bertin, E ...
Published in: Open Journal of Astrophysics
January 1, 2023

We 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 (Formula Presented) with a mean value of (Formula Presented). 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.

Duke Scholars

Published In

Open Journal of Astrophysics

DOI

EISSN

2565-6120

Publication Date

January 1, 2023

Volume

6
 

Citation

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Abbott, T. M. C., Aguena, M., Alarcon, A., Alves, O., Amon, A., Andrade-Oliveira, F., … Menanteau, F. (2023). DES Y3 + KIDS-1000: CONSISTENT COSMOLOGY COMBINING COSMIC SHEAR SURVEYS. Open Journal of Astrophysics, 6. https://doi.org/10.21105/astro.2305.17173
Abbott, T. M. C., M. Aguena, A. Alarcon, O. Alves, A. Amon, F. Andrade-Oliveira, M. Asgari, et al. “DES Y3 + KIDS-1000: CONSISTENT COSMOLOGY COMBINING COSMIC SHEAR SURVEYS.” Open Journal of Astrophysics 6 (January 1, 2023). https://doi.org/10.21105/astro.2305.17173.
Abbott TMC, Aguena M, Alarcon A, Alves O, Amon A, Andrade-Oliveira F, et al. DES Y3 + KIDS-1000: CONSISTENT COSMOLOGY COMBINING COSMIC SHEAR SURVEYS. Open Journal of Astrophysics. 2023 Jan 1;6.
Abbott, T. M. C., et al. “DES Y3 + KIDS-1000: CONSISTENT COSMOLOGY COMBINING COSMIC SHEAR SURVEYS.” Open Journal of Astrophysics, vol. 6, Jan. 2023. Scopus, doi:10.21105/astro.2305.17173.
Abbott TMC, Aguena M, Alarcon A, Alves O, Amon A, Andrade-Oliveira F, Asgari M, Avila S, Bacon D, Bechtol K, Becker MR, Bernstein GM, Bertin E, Bilicki M, Blazek J, Bocquet S, Brooks D, Burger P, Burke DL, Camacho H, Campos A, Rosell AC, Kind MC, Carretero J, Castander FJ, Cawthon R, Chang C, Chen R, Choi A, Conselice C, Cordero J, Crocce M, da Costa LN, da Silva Pereira ME, Dalal R, Davis C, Davis TM, de Jong JTA, DeRose J, Desai S, Diehl HT, Dodelson S, Doux PD, Drlica-Wagner A, Dvornik A, Eckert K, Eifler TF, Elvin-Poole J, Everett S, Fang X, Ferrero I, Ferté A, Flaugher B, Friedrich O, Frieman J, García-Bellido J, Gatti M, Giannini G, Giblin B, Gruen D, Gruendl RA, Gutierrez G, Harrison I, Hartley WG, Herner K, Heymans C, Hildebrandt H, Hinton SR, Hoekstra H, Hollowood DL, Honscheid K, Huang H, Huff EM, Huterer D, James DJ, Jarvis M, Jeffrey N, Jeltema T, Joachimi B, Joudaki S, Kannawadi A, Krause E, Kuehn K, Kuijken K, Kuropatkin N, Lahav O, Leget PF, Lemos P, Li SS, Li X, Liddle AR, Lima M, Lin CA, Lin H, MacCrann N, Mahony B, Marshall JL, McCullough J, Mena-Fernández J, Menanteau F. DES Y3 + KIDS-1000: CONSISTENT COSMOLOGY COMBINING COSMIC SHEAR SURVEYS. Open Journal of Astrophysics. 2023 Jan 1;6.

Published In

Open Journal of Astrophysics

DOI

EISSN

2565-6120

Publication Date

January 1, 2023

Volume

6