Cosmological Constraints from Full-scale Clustering and Galaxy–Galaxy Lensing with DESI DR1
Year: 2026
Type: article
Abstract: We present constraints on cosmic structure growth from the analysis of galaxy clustering and galaxy–galaxy lensing with galaxies from the Dark Energy Spectroscopic Instrument (DESI) Data Release 1. Our analysis includes four samples drawn from the Bright Galaxy Survey (BGS) and the luminous red galaxy (LRG) target classes. Projected galaxy clustering measurements from DESI are supplemented with lensing data from the Dark Energy Survey (DES), the Kilo-Degree Survey (KiDS), and the Hyper Suprime-Cam (HSC) survey around the same targets. Our method relies on a simulation-based modeling framework using the AbacusSummit simulations and a complex halo occupation distribution model that incorporates assembly bias. We analyze scales down to 0.4 h −1 Mpc for clustering and 2.5 h −1 Mpc for lensing, leading to stringent constraints on S 8 = σ 8 Ω m / 0.3 and Ω m when fixing other cosmological parameters to those preferred by the cosmic microwave background. We find S 8 = 0.79 7 − 0.024 + 0.023 and Ω m = 0.292 ± 0.011 when using lensing measurements from DES and KiDS. Similarly, for HSC, we find S 8 = 0.79 1 − 0.021 + 0.020 and Ω m = 0.300 ± 0.009 when assuming the best-fit photometric redshift offset suggested by the HSC collaboration. Overall, our results are in good agreement with other results in the literature while continuing to highlight the constraining power of nonlinear scales.
Source: The Astrophysical Journal
Authors: J. U. Lange, A. Wells, A. Hearin, G. Beltz-Mohrmann, A. Leauthaud, S. Heydenreich, C. Blake, J. Aguilar, S. Ahlen, A. Anand, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, S. Cole, A. Cuceu, K. S. Dawson, A. de la Macorra, Biprateep Dey, P. Doel, A. Elliott, N. Emas, S. Ferraro, A. Font-Ribera, J. E. Forero-Romero, C. Garcia-Quintero, E. Gaztañaga, Satya Gontcho A Gontcho, G. Gutierrez, J. Guy, K. Honscheid, D. Huterer, M. Ishak, S. Joudaki, R. Joyce, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, A. Krolewski, O. Lahav, C. Lamman, M. Landriau, L. Le Guillou, M. E. Levi, M. Manera, P. Martini, A. Meisner, R. Miquel, J. Moustakas, E. Mueller, S. Nadathur, J. A. Newman, G. Niz, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, A. Porredon, F. Prada, I. Pérez-Ràfols, A. Robertson, G. Rossi, R. Ruggeri, E. Sanchez, C. Saulder, D. Schlegel, M. Schubnell, A. Semenaite, H. Seo, J. Silber, D. Sprayberry, Z. Sun, G. Tarlé, M. Vargas-Magaña, B. A. Weaver, R. H. Wechsler, P. Zarrouk, R. Zhou, H. Zou
Institutions: American University, University of Michigan, Smith College, Swinburne University of Technology, Lawrence Berkeley National Laboratory, Boston University, University of Milan, Brera Astronomical Observatory, National Institute for Astrophysics, University College London, Institut d'Estudis Espacials de Catalunya, Durham University, University of Utah, Universidad Nacional Autónoma de México, University of Pittsburgh, University of Toronto, The Ohio State University, Institució Catalana de Recerca i Estudis Avançats, Institute for High Energy Physics, Universidad de Los Andes, Center for Astrophysics Harvard & Smithsonian, University of Portsmouth, University of Virginia, Fermi National Accelerator Laboratory, The University of Texas at Dallas, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, NSF NOIRLab, Southern Methodist University, University of Waterloo, Perimeter Institute, Sorbonne Université, Universitat Autònoma de Barcelona, University of Siena, University of Sussex, Universidad de Guanajuato, Université Paris-Saclay, Ruhr University Bochum, University of Edinburgh, Consejo Superior de Investigaciones Científicas, Instituto de Astrofísica de Andalucía, Universitat Politècnica de Catalunya, Sejong University, Queensland University of Technology, Max Planck Institute for Extraterrestrial Physics, Ohio University, Tsinghua University, SLAC National Accelerator Laboratory, Stanford University, Chinese Academy of Sciences
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,499
Funders: National Science Foundation, U.S. Department of Energy, Gordon and Betty Moore Foundation, University of California, Santa Cruz, Ministerio de Ciencia, Innovación y Universidades, Deutsche Forschungsgemeinschaft, Ministry of Education, Culture, Sports, Science and Technology, Cabinet Office, Government of Japan, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Università degli Studi di Padova, National Astronomical Observatory of Japan, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Toray Science Foundation, Office of Science, Science and Technology Facilities Council, Japan Society for the Promotion of Science, Japan Science and Technology Agency, Agencia Estatal de Investigación, Division of Astronomical Sciences
Awards: G1044631029, G1105844351, G1175115578, G1286236842, G1813527838, G1863003419, G2262748287, G294895050, G300979063, G3083819904, G3452655474, G3480869486, G425668148, G4501827968, G491712853, G498139845, G5080475149, G5635532810, G593054264, G6435217846, G6464745819, G6652958823, G6876926712, G7084143925, Management and Operations of the National Optical Astronomy Observatory, G7395345766, G7805626310, G7863371703, G8345352404, G8497050386, G8667377315, MRI: Acquisition of a High Performance Computer for Computational Science at UC Santa Cruz, G969889393
OpenAlex ID: W4417529492
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