Cosmological Constraints from Six Years of Dark Energy Survey Data
ORAL · Invited
Abstract
*Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico and the Ministério da Ciência, Tecnologia e Inovação, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey.
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Publication: Gold Catalogs: K. Bechtol et al., Dark Energy Survey Year 6 Results: Photometric Data Set for Cosmology (arXiv:2501.05739, 2005)
Balrog/SSI: D. Anbajagane, M. Tabbutt, et al., Dark Energy Survey Year 6 Results: Synthetic-source Injection Across the Full Survey Using Balrog, OJA, 8, 65 (arXiv:2501.05683, 2025)
PSF: T. Schutt et al., Dark Energy Survey Year 6 Results: Point-Spread Function Modeling, OJA, 8, 26 (arXiv:2501.05781, 2025)
Masking: M. Rodríguez-Monroy, N. Weaverdyck, et al., Dark Energy
Survey Year 6 Results: improved mitigation of spatially varying observational systematics with masking (arXiv:2509.07943, 2025)
Source Sample: M. Yamamoto, M. R. Becker, et al., Dark Energy Survey
Year 6 Results: Cell-based Coadds and Metadetection Weak Lensing Shape Catalogue, MNRAS, 543, 4156 (arXiv:2501.05665, 2025)
Lens Sample: N. Weaverdyck, M. Rodríguez-Monroy, et al., Dark Energy Survey Year 6 Results: MagLim++ Lens Sample Definition and Measurements of Galaxy Clustering (arXiv:2601.14484, 2026)
Source PZ: B. Yin et al., Dark Energy Survey Year 6 Results: Redshift Calibration of the Weak Lensing Source Galaxies (arXiv:2510.23566, 2025)
Magnification: E. Legnani et al., Dark Energy Survey Year 6 Results:
Magnification modeling and its impact on galaxy clustering and galaxy-galaxy lensing cosmology (arXiv:2601.14833, 2026)
Clustering PZ: W. d'Assignies et al., Dark Energy Survey Year 6 Results: Clustering-redshifts and importance sampling of Self-Organised-Maps n(z) realizations for 3x2pt samples (arXiv:2510.23565, 2025)
Sampling Methods: G. Bernstein et al., Sampling posterior distributions when only samples from a prior are available (arXiv:2506.00758, 2025)
Image Sims: S. Mau, M. Becker, et al., Dark Energy Survey Year 6 Results: Image Simulations for Weak Lensing Shear and Photometric Redshift Calibration, in prep (2026)
Mock Catalogs: C.-H. To et al., Dark Energy Survey: Modeling strategy for multiprobe cluster cosmology and validation for the full six-year dataset, PRD, 112, 063537 (arXiv:2503.13631, 2025)
Modeling and Analysis: D. Sanchez-Cid, A. Ferté, et al., Dark Energy Survey
Year 6 Results: Multi-Probe Modeling Strategy and Validation (arXiv:2601.14859, 2026)
Lens PZ: G. Giannini et al., Dark Energy Survey Year 6 Results: Redshift Calibration of the MagLim++ Lens Sample (arXiv:2509.07964, 2025)
Posterior Checks: C. Doux, J. Muir, et al., Dark Energy Survey Year 6 Results: fast and interpretable posterior predictive checks for correlated cosmic probes, in prep (2026)
GGL: G. Giannini et al., Dark Energy Survey Year 6 Results: Galaxy-galaxy Lensing (arXiv:2601.15175, 2026)
3x2 Cosmology: DES Collaboration, Dark Energy Survey Year 6 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing (arXiv:2601.14559, 2026)
Presenters
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Matthew R Becker
- Argonne National Laboratory