| Title: |
Dark energy survey year 3 results: Cosmological constraints from cluster abundances, weak lensing, and galaxy clustering |
| Authors: |
Abbott, TMC; Aguena, M; Alarcon, A; Amon, A; Anbajagane, D; Andrade-Oliveira, F; Avila, S; Allam, SS; Bacon, D; Becker, MR; Bhargava, S; Blazek, J; Bocquet, S; Brooks, D; Carnero Rosell, A; Carretero, J; Castander, FJ; Chang, C; Choi, A; Conselice, C; Costanzi, M; Crocce, M; da Costa, LN; Pereira, MES; Doux, C; Davis, TM; Desai, S; Diehl, HT; Dodelson, S; Doel, P; Elvin-Poole, J; Esteves, J; Everett, S; Farahi, A; Fert´e, A; Flaugher, B; García-Bellido, J; Gatti, M; Giannini, G; Giles, P; Grandis, S; Gruen, D; Gruendl, RA; Gutierrez, G; Harrison, I; Hinton, SR; Hollowood, DL; Honscheid, K; Jeffrey, N; Jeltema, T; Krause, E; Lahav, O; Lee, S; Lidman, C; Lima, M; Lin, H; Mohr, JJ; Marshall, JL; McCullough, J; Mena-Fern'andez, J; Miquel, R; Muir, J; Myles, J; Ogando, RLC; Palmese, A; Paterno, M; Plazas Malagón, AA; Porredon, A; Prat, J; Romer, AK; Roodman, A; Rozo, E; Rykoff, ES; Rosenfeld, R; Sanchez, E; Sanchez Cid, D; Sevilla-Noarbe, I; Smith, M; Suchyta, E; Shin, TH; Tarle, G; Thomas, D; To, CH; Troxel, MA; Vikram, V; Walker, AR; Weinberg, DH; Weaverdyck, N; Wechsler, RH; Weller, J; Wu, HY; Yamamoto, M; Yanny, B; Zhang, Y; Zhou, C |
| Source: |
Physical Review D , 112 (8) , Article 083535. (2025) |
| Publisher Information: |
American Physical Society (APS) |
| Publication Year: |
2025 |
| Collection: |
University College London: UCL Discovery |
| Description: |
Galaxy clusters provide a unique probe of the late-time cosmic structure and serve as a powerful independent test of the ΛCDM model. This work presents the first set of cosmological constraints derived with ∼16; 000 optically selected redMaPPer clusters across nearly 5000 deg2 using DES year 3 datasets. Our analysis leverages a consistent modeling framework for galaxy cluster cosmology and DES-Y3 joint analyses of galaxy clustering and weak lensing (3 × 2pt), ensuring direct comparability with the DES-Y3 3 × 2pt analysis. We obtain constraints of S8 ¼ 0.864 0.035 and Ωm ¼ 0.265þ0.019 −0.031 from the cluster-based data vector. We find that cluster constraints and 3 × 2pt constraints are consistent under the ΛCDM model with a posterior predictive distribution (PPD) value of 0.53. The consistency between clusters and 3 × 2pt provides a stringent test of ΛCDM across different mass and spatial scales. Jointly analyzing clusters with 3 × 2pt further improves cosmological constraints, yielding S8 ¼ 0.811þ0.022 −0.020 and Ωm ¼ 0.294þ0.022 −0.033 , a 24% improvement in the Ωm − S8 figure of merit over 3 × 2pt alone. Moreover, we find no significant deviation from the Planck CMB constraints with a probability to exceed (PTE) value of 0.6, significantly reducing previous S8 tension claims. Finally, combining DES 3 × 2pt, DES clusters, and Planck CMB places an upper limit on the sum of neutrino masses of Pmν < 0.26 eV at 95% confidence under the ΛCDM model. These results establish optically selected clusters as a key cosmological probe and pave the way for cluster-based analyses in upcoming stage-IV surveys such as LSST, Euclid, and Roman. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://discovery.ucl.ac.uk/id/eprint/10217330/ |
| Availability: |
https://discovery.ucl.ac.uk/id/eprint/10217330/1/3dzh-d8f5.pdf; https://discovery.ucl.ac.uk/id/eprint/10217330/ |
| Rights: |
open |
| Accession Number: |
edsbas.9AC9EA33 |
| Database: |
BASE |