Descrição
Made available in DSpace on 2022-04-29T08:39:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-15
We present the first cosmology results from large-scale structure using the full 5000 deg2 of imaging data from the Dark Energy Survey (DES) Data Release 1. We perform an analysis of large-scale structure combining three two-point correlation functions (3×2pt): (i) cosmic shear using 100 million source galaxies, (ii) galaxy clustering, and (iii) the cross-correlation of source galaxy shear with lens galaxy positions, galaxy-galaxy lensing. To achieve the cosmological precision enabled by these measurements has required updates to nearly every part of the analysis from DES Year 1, including the use of two independent galaxy clustering samples, modeling advances, and several novel improvements in the calibration of gravitational shear and photometric redshift inference. The analysis was performed under strict conditions to mitigate confirmation or observer bias; we describe specific changes made to the lens galaxy sample following unblinding of the results and tests of the robustness of our results to this decision. We model the data within the flat ΛCDM and wCDM cosmological models, marginalizing over 25 nuisance parameters. We find consistent cosmological results between the three two-point correlation functions; their combination yields clustering amplitude S8=0.776-0.017+0.017 and matter density ωm=0.339-0.031+0.032 in ΛCDM, mean with 68% confidence limits; S8=0.775-0.024+0.026, ωm=0.352-0.041+0.035, and dark energy equation-of-state parameter w=-0.98-0.20+0.32 in wCDM. These constraints correspond to an improvement in signal-to-noise of the DES Year 3 3×2pt data relative to DES Year 1 by a factor of 2.1, about 20% more than expected from the increase in observing area alone. This combination of DES data is consistent with the prediction of the model favored by the Planck 2018 cosmic microwave background (CMB) primary anisotropy data, which is quantified with a probability-to-exceed p=0.13-0.48. We find better agreement between DES 3×2pt and Planck than in DES Y1, despite the significantly improved precision of both. When combining DES 3×2pt data with available baryon acoustic oscillation, redshift-space distortion, and type Ia supernovae data, we find p=0.34. Combining all of these datasets with Planck CMB lensing yields joint parameter constraints of S8=0.812-0.008+0.008, ωm=0.306-0.005+0.004, h=0.680-0.003+0.004, and mν<0.13 eV (95% C.L.) in ΛCDM; S8=0.812-0.008+0.008, ωm=0.302-0.006+0.006, h=0.687-0.007+0.006, and w=-1.031-0.027+0.030 in wCDM.
Cerro Tololo Inter-American Observatory NSF's National Optical-Infrared Astronomy Research Laboratory, Casilla 603
Laboratório Interinstitucional de E-Astronomia - LIneA, Rua Gal. José Cristino 77, RJ
Argonne National Laboratory, 9700 South Cass Avenue
Fermi National Accelerator Laboratory, P. O. Box 500
Department of Physics University of Michigan
Instituto de Física Teórica Universidade Estadual Paulista
Kavli Institute for Particle Astrophysics and Cosmology Stanford University
Instituto de Fisica Teorica UAM/CSIC Universidad Autonoma de Madrid
Institute of Cosmology and Gravitation University of Portsmouth
Institute for Astronomy University of Hawai'i, 2680 Woodlawn Drive
Physics Department 2320 Chamberlin Hall University of Wisconsin-Madison, 1150 University Avenue
Department of Physics and Astronomy University of Pennsylvania
Department of Physics and Astronomy Pevensey Building University of Sussex
Graduate School of Education Stanford University 160 450 Serra Mall
Department of Physics Northeastern University
Laboratory of Astrophysics École Polytechnique Fédérale de Lausanne (EPFL) Observatoire de Sauverny
Instituto de Física Gleb Wataghin Universidade Estadual de Campinas, SP
Jodrell Bank Center for Astrophysics School of Physics and Astronomy University of Manchester, Oxford Road
Department of Physics and Astronomy University College London, Gower Street
Department of Astronomy and Astrophysics University of Chicago
SLAC National Accelerator Laboratory
Department of Physics Carnegie Mellon University
Instituto de Astrofisica de Canarias, La Laguna
Universidad de la Laguna Dpto. Astrofísica, La Laguna
Center for Astrophysical Surveys National Center for Supercomputing Applications, 1205 West Clark Street
Department of Astronomy University of Illinois at Urbana-Champaign, 1002 W. Green Street
Institut de Física d'Altes Energies (IFAE) The Barcelona Institute of Science and Technology Campus UAB, Bellaterra
Institut d'Estudis Espacials de Catalunya (IEEC)
Institute of Space Sciences (ICE CSIC) Campus UAB, Carrer de Can Magrans, s/n
Kavli Institute for Cosmological Physics University of Chicago
Department of Physics Duke University
Center for Cosmology and Astro-Particle Physics The Ohio State University
University of Nottingham School of Physics and Astronomy
Astronomy Unit Department of Physics University of Trieste, via Tiepolo 11
INAF-Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11
Institute for Fundamental Physics of the Universe, Via Beirut 2
Observatório Nacional, Rua Gal. José Cristino 77, RJ
School of Mathematics and Physics University of Queensland
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Lawrence Berkeley National Laboratory, 1 Cyclotron Road
Department of Physics IIT Hyderabad, Kandi
Faculty of Physics Ludwig-Maximilians-Universität, Scheinerstr. 1
NSF AI Planning Institute for Physics of the Future Carnegie Mellon University
Department of Astronomy Steward Observatory University of Arizona, 933 North Cherry Avenue
Jet Propulsion Laboratory California Institute of Technology, 4800 Oak Grove Dr.
Department of Physics The Ohio State University
Santa Cruz Institute for Particle Physics
Department of Astronomy University of Michigan
Departments of Statistics and Data Science University of Texas at Austin
Institute of Theoretical Astrophysics University of Oslo, P.O. Box 1029 Blindern
Kavli Institute for Cosmology University of Cambridge, Madingley Road
Institute of Astronomy University of Cambridge, Madingley Road
Department of Physics Stanford University 382 Via Pueblo Mall
Department of Physics University of Oxford Denys Wilkinson Building, Keble Road
Department of Astronomy University of Geneva, ch. d'Écogia 16
Center for Astrophysics and Harvard and Smithsonian, 60 Garden Street
Laboratoire de Physique de l'Ecole Normale Supérieure ENS Université PSL CNRS Sorbonne Université Université de Paris
Australian Astronomical Optics Macquarie University
Lowell Observatory, 1400 Mars Hill Rd
Institute for Astronomy University of Edinburgh
Instituto de Astrofísica e Ciências Do Espaço Faculdade de Ciências Universidade de Lisboa
Perimeter Institute for Theoretical Physics, 31 Caroline Street North
Centre for Gravitational Astrophysics College of Science The Australian National University
The Research School of Astronomy and Astrophysics Australian National University
Departamento de Física Matemática Instituto de Física Universidade de São Paulo, CP 66318, SP
Department of Applied Mathematics and Theoretical Physics University of Cambridge
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy And Department of Physics and Astronomy Texas AandM University
Department of Astronomy The Ohio State University
Radcliffe Institute for Advanced Study Harvard University
Department of Astrophysical Sciences Princeton University Peyton Hall
Institució Catalana de Recerca i Estudis Avançats
Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse
Kavli Institute for the Physics and Mathematics of the Universe (WPI) UTIAS The University of Tokyo, Kashiwa
ICTP South American Institute for Fundamental Research Instituto de Física Teórica Universidade Estadual Paulista
Brookhaven National Laboratory
School of Physics and Astronomy University of Southampton
Computer Science and Mathematics Division Oak Ridge National Laboratory
Universitäts-Sternwarte Fakultät für Physik Ludwig-Maximilians Universität München, Scheinerstr. 1
Instituto de Física Teórica Universidade Estadual Paulista
ICTP South American Institute for Fundamental Research Instituto de Física Teórica Universidade Estadual Paulista
