Dark Energy Survey Year 3 results: Cosmology with moments of weak lensing mass maps

Journal Article · Wed Oct 12 00:00:00 EDT 2022 · Physical Review. D.

DOI:https://doi.org/10.1103/physrevd.106.083509· OSTI ID:1838498

Gatti, M.  ^[1]; Jain, B.; Chang, C.; Raveri, M.; Zürcher, D.; Secco, L.; Whiteway, L.; Jeffrey, N.; Doux, C.; Kacprzak, T.; Bacon, D.; Fosalba, P.; Alarcon, A.; Amon, A.; Bechtol, K.; Becker, M.; Bernstein, G.; Blazek, J.; Campos, A.; Choi, A. ; Davis, C.; Derose, J.; Dodelson, S.; Elsner, F.; Elvin-Poole, J.; Everett, S.; Ferte, A.; Gruen, D.; Harrison, I.; Huterer, D.; Jarvis, M.; Krause, E.; Leget, P.  F.; Lemos, P.; Maccrann, N.; Mccullough, J.; Muir, J.; Myles, J.; Navarro, A.; Pandey, S.; Prat, J.; Rollins, R.  P.; Roodman, A.; Sanchez, C.; Sheldon, E.; Shin, T.; Troxel, M.; Tutusaus, I.; Yin, B.; Aguena, M.; Allam, S.; Andrade-Oliveira, F.; Annis, J.; Bertin, E.; Brooks, D.; Burke, D.  L.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Cawthon, R.; Costanzi, M.; da Costa, L.  N.; Pereira, M.  E. S.; De Vicente, J.; Desai, S.; Diehl, H.  T.; Dietrich, J.  P.; Doel, P.; Drlica-Wagner, A.; Eckert, K.; Evrard, A.  E.; Ferrero, I.; García-Bellido, J.; Gaztanaga, E.; Giannantonio, T.; Gruendl, R.  A.; Gschwend, J.; Gutierrez, G.; Hinton, S.  R.; Hollowood, D.  L.; Honscheid, K.; James, D.  J.; Kuehn, K.; Kuropatkin, N.; Lahav, O.; Lidman, C.; Maia, M.  A. G.; Marshall, J.  L.; Melchior, P.; Menanteau, F.; Miquel, R.; Morgan, R.; Palmese, A.; Paz-Chinchón, F.; Pieres, A.; Plazas Malagón, A.  A.; Reil, K.; Rodriguez-Monroyv, M.; Romer, A.  K.; Sanchez, E.; Schubnell, M.; Serrano, S.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Suchyta, E.; Tarle, G.; Thomas, D.; To, C.; Varga, T.  N.

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1. University of Pennsylvania, Philadelphia, PA (United States); DES Collaboration.et al.

Here, we present a cosmological analysis using the second and third moments of the weak lensing mass (convergence) maps from the first three years of data (Y3) data of the Dark Energy Survey. The survey spans an effective area of 4139 square degrees and uses the images of over 100 million galaxies to reconstruct the convergence field. The second moment of the convergence as a function of smoothing scale contains information similar to standard shear 2-point statistics. The third moment, or the skewness, contains additional non-Gaussian information. The data is analyzed in the context of the Λ CDM model, varying five cosmological parameters and 19 nuisance parameters modeling astrophysical and measurement systematics. Our modeling of the observables is completely analytical, and has been tested with simulations in our previous methodology study. We obtain a 1.7% measurement of the amplitude of fluctuations parameter S₈ ≡ σ₈(Ω_m/0.3)^0.5 = 0.784 ± 0.013. The measurements are shown to be internally consistent across redshift bins, angular scales, and between second and third moments. In particular, the measured third moment is consistent with the expectation of gravitational clustering under the Λ CDM model. The addition of the third moment improves the constraints on S₈ and Ω_m by ~15% and ~25% compared to an analysis that only uses second moments. We compare our results with Planck constraints from the cosmic microwave background, finding a 2.2–2.8σ tension in the full parameter space, depending on the combination of moments considered. The third moment, independently, is in 2.8σ tension with Planck, and thus provides a cross-check on the analyses of 2-point correlations.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Michigan, Ann Arbor, MI (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: DES collaboration; DES Collaboration
• Grant/Contract Number: AC02-07CH11359; AC05-00OR22725; SC0019193
• OSTI ID: 1838498
• Alternate ID(s): OSTI ID: 1974865; OSTI ID: 1992719
• Report Number(s): FERMILAB-PUB-21-492-AE; arXiv:2110.10141; oai:inspirehep.net:1947448; TRN: US2301016
• Journal Information: Physical Review. D., Vol. 106, Issue 8; ISSN 2470-0010
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

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