Cosmological Constraints from Full-scale Clustering and Galaxy–Galaxy Lensing with DESI DR1
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.
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Authors: Alexandra Wells, Andrew P. Hearin, Gillian D. Beltz-Mohrmann, Alexie Leauthaud, Sven Heydenreich, Chris Blake, J. Aguilar, Steven P. Ahlen, Abhijeet Anand, Francisco Javier Castander, T. Claybaugh, Andrei Cuceu, Kyle Dawson, Axel de la Macorra, Biprateep Dey, P. Doel, Ann Elliott, N Emas, Simone Ferraro, Andreu Font-Ribera, J. E. Forero-Romero, C. García-Quintero, ENRIQUE GAZTAÑAGA, Satya Gontcho A Gontcho, Gaston Gutierrez, J. Guy, K. Honscheid, Dragan Huterer A, Mustapha Ishak, Shahab Joudaki, R. Kehoe, David R. Kirkby, Theodore Kisner, Anthony Kremin, Alex Krolewski, Ofer Lahav, C. Lamman, Martin Landriau, Laurent Le Guillou, Michael Levi, Marc Manera, Paul Martini, Aaron Meisner, R. Miquel, John Moustakas, Eva-Maria Mueller, S. Nadathur, Gustavo Niz, N. Palanque‐Delabrouille, Will Percival, Claire Poppett, A. Porredon, Francisco Prada, Ignasi Pérez-Ràfols, Graziano Rossi, Rossana Ruggeri, Eusebio Sanchez, Christoph Saulder, David J. Schlegel, Michael S. Schubnell, Agne Semenaite, Hee‐Jong Seo, Joseph Harry Silber, David Sprayberry, Gregory Tarlé, M. Vargas-Magaña, Benjamin A. Weaver, Risa H. Wechsler, Pauline Zarrouk, Rongpu Zhou, Hu Zou
Institutions: University of Pittsburgh, Universidad Nacional Autónoma de México, Chinese Academy of Sciences, Swinburne University of Technology, The Ohio State University, University of Virginia, University of Michigan, University of Toronto, Boston University, Consejo Superior de Investigaciones Científicas, University College London, Universitat Autònoma de Barcelona, University of Edinburgh, Ohio University, University of Utah, Stanford University, Sorbonne Université, University of Waterloo, Tsinghua University, Institució Catalana de Recerca i Estudis Avançats, Durham University, Queensland University of Technology, Universidad de Guanajuato, Universitat Politècnica de Catalunya, American University, Ruhr University Bochum, Université Paris-Saclay, University of Milan, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, University of Portsmouth, The University of Texas at Dallas, Sejong University, University of Sussex, Max Planck Institute for Extraterrestrial Physics, Lawrence Berkeley National Laboratory, Fermi National Accelerator Laboratory, University of Siena, Institut d'Estudis Espacials de Catalunya, NSF NOIRLab, SLAC National Accelerator Laboratory, Smith College, Southern Methodist University, Instituto de Astrofísica de Andalucía, National Institute for Astrophysics, Universidad de Los Andes, Center for Astrophysics Harvard & Smithsonian, Brera Astronomical Observatory, Institute for High Energy Physics, Perimeter Institute