Cosmological Constraints from Full-scale Clustering and Galaxy–Galaxy Lensing with DESI DR1

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.

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Journal
The Astrophysical Journal
Published
2026-10-15
DOI
https://doi.org/10.3847/1538-4357/aeaa3b
Primary Topic
Cosmology and Gravitation Theories
Type
article
Field-Weighted Citation Impact
0.00

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article

Cosmological Constraints from Full-scale Clustering and Galaxy–Galaxy Lensing with DESI DR1

Agne Semenaite, C. García-Quintero, Abhijeet Anand, Rongpu Zhou et al.
The Astrophysical Journal
Cosmology and Gravitation Theories
article

Cosmological Constraints from Full-scale Clustering and Galaxy–Galaxy Lensing with DESI DR1

Agne Semenaite, C. García-Quintero, Abhijeet Anand, Rongpu Zhou, Paul Martini, Michael S. Schubnell, Francisco Javier Castander, Eva-Maria Mueller, N. Palanque‐Delabrouille, S. Nadathur, Gillian D. Beltz-Mohrmann, Gregory Tarlé, Kyle Dawson, Andreu Font-Ribera, N Emas, A. Porredon, Laurent Le Guillou, David Sprayberry, Andrew P. Hearin, Gustavo Niz, Shahab Joudaki, David J. Schlegel, Ignasi Pérez-Ràfols, Axel de la Macorra, Martin Landriau, Alex Krolewski, Simone Ferraro, Rossana Ruggeri, Marc Manera, Gaston Gutierrez, J. Aguilar, J. Guy, Eusebio Sanchez, Satya Gontcho A Gontcho, David R. Kirkby, Christoph Saulder, ENRIQUE GAZTAÑAGA, K. Honscheid, Andrei Cuceu, Will Percival, Joseph Harry Silber, Sven Heydenreich, Alexandra Wells, J. E. Forero-Romero, Steven P. Ahlen, Aaron Meisner, Pauline Zarrouk, R. Miquel, Biprateep Dey, Dragan Huterer A, Cullen H. Blake, R. Kehoe, Risa H. Wechsler, John Moustakas, Claire Poppett, Mustapha Ishak, Hee‐Jong Seo, M. Vargas-Magaña, C. Lamman, Alexie Leauthaud, Hu Zou, Ofer Lahav, T. Claybaugh, Ann Elliott, Benjamin A. Weaver, P. Doel, Anthony Kremin, Michael Levi, Theodore Kisner, Graziano Rossi, Francisco Prada
article en

Abstract

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.

The Astrophysical JournalVol. 1010(2)
University of Siena (IT), Boston University (US), Institució Catalana de Recerca i Estudis Avançats (ES), Universitat Autònoma de Barcelona (ES), Universidad de Guanajuato (MX), Fermi National Accelerator Laboratory (US), Consejo Superior de Investigaciones Científicas (ES), Lawrence Berkeley National Laboratory (US), University of Waterloo (CA), Queensland University of Technology (AU), Universidad de Los Andes (CO), The University of Texas at Dallas (US), University of Sussex (GB), University of Pittsburgh (US), Southern Methodist University (US), American University (US), Perimeter Institute (CA), University of Toronto (CA), Institute for High Energy Physics (ES), University of Milan (IT), Durham University (GB), Chinese Academy of Sciences (CN), Smith College (US), University of Utah (US), Université Paris-Saclay (FR), University of Michigan (US), SLAC National Accelerator Laboratory (US), Brera Astronomical Observatory (IT), Sejong University (KR), Sorbonne Université (FR), Max Planck Institute for Extraterrestrial Physics (DE), Institut d'Estudis Espacials de Catalunya (ES), Ohio University (US), Center for Astrophysics Harvard & Smithsonian (US), NSF NOIRLab (US), Instituto de Astrofísica de Andalucía (ES), Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (ES), University College London (GB), University of Virginia (US), The Ohio State University (US), Swinburne University of Technology (AU), University of Portsmouth (GB), National Institute for Astrophysics (IT), Universidad Nacional Autónoma de México (MX), Ruhr University Bochum (DE), Universitat Politècnica de Catalunya (ES), Stanford University (US), University of Edinburgh (GB), Tsinghua University (CN)
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
Openalex Percentile: Top 98%
Cosmology and Gravitation Theories
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