Dark Energy Survey Year 3 results: Cosmology from cosmic shear and robustness to modeling uncertainty
L. F. SeccoKavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USAS. SamuroffDepartment of Physics, Northeastern University, Boston, Massachusetts 02115, USAE. KrauseDepartment of Astronomy/Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, Arizona 85721-0065, USABhuvnesh JainDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAJ. BlazekDepartment of Physics, Northeastern University, Boston, Massachusetts 02115, USAMarco RaveriDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAA. CamposMcWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USAA. AmonKavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, California 94305, USAAngela ChenDepartment of Physics, University of Michigan, Ann Arbor, Michigan 48109, USAC. DouxDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAA. ChoiCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USAD. GruenSLAC National Accelerator Laboratory, Menlo Park, California 94025, USAG. M. BernsteinDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAC. ChangKavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USAJoseph DeRoseBerkeley Center for Cosmological Physics, University of California, Berkeley, California 94720, USAJ. MylesKavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, California 94305, USAA. FertéJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, California 91109, USAPablo LemosDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United KingdomDragan HutererDepartment of Physics, University of Michigan, Ann Arbor, Michigan 48109, USAJ. PratKavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USAM. A. TroxelDepartment of Physics, Duke University Durham, North Carolina 27708, USAN. MacCrannDepartment of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, United KingdomAndrew R. LiddleInstitute for Astronomy, University of Edinburgh, Edinburgh EH9 3HJ, United KingdomTomasz KacprzakInstitute for Particle Physics and Astrophysics, ETH Zürich, Wolfgang-Pauli-Strasse 27, CH-8093 Zürich, SwitzerlandXiao FangDepartment of Astronomy/Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, Arizona 85721-0065, USAC. SánchezDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAShivam PandeyDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAScott DodelsonMcWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USAP. ChintalapatiDepartment of Physics, Northern Illinois University, DeKalb, Illinois 60115, USAKai HoffmannInstitute for Computational Science, University of Zürich, Winterthurerstr. 190, 8057 Zürich, SwitzerlandA. AlarconArgonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, USAO. AlvesInstituto de Física Teórica, Universidade Estadual Paulista, São Paulo 01140-070, BrazilF. Andrade-OliveiraLaboratório Interinstitucional de e-Astronomia—LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400, BrazilEric J. BaxterInstitute for Astronomy, University of Hawai’i, 2680 Woodlawn Drive, Honolulu, Hawaii 96822, USAK. BechtolPhysics Department, 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, Wisconsin 53706-1390, USAM. R. BeckerArgonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, USAA. Brandao-SouzaLaboratório Interinstitucional de e-Astronomia—LIneA, Rua Gal. José Cristino 77, Rio de Janeiro RJ—20921-400, BrazilH. CamachoLaboratório Interinstitucional de e-Astronomia—LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400, BrazilA. Carnero RosellInstituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, SpainM. Carrasco KindDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, Illinois 61801, USAR. CawthonPhysics Department, 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, Wisconsin 53706-1390, USAJ. CorderoJodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, United KingdomM. CrocceInstitut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, SpainC. DavisStanford UniversityEleonora Di ValentinoJodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, United KingdomA. Drlica-WagnerFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USAK. EckertDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAT. F. EiflerJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, California 91109, USAM. ElidaianaDepartment of Physics, University of Michigan, Ann Arbor, Michigan 48109, USAF. ElsnerMax Planck Institute für Extraterrestrial Physics, Giessenbachstrasse, 85748 Garching, GermanyJ. Elvin-PooleCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USAS. EverettP. FosalbaInstitut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, SpainO. FriedrichInstitute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, United KingdomM. GattiDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAG. GianniniInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra (Barcelona), SpainR. A. GruendlDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, Illinois 61801, USAI. HarrisonDepartment of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United KingdomW. G. HartleyDépartement de Physique Théorique and Center for Astroparticle Physics, Université de Genève, 24 quai Ernest Ansermet, CH-1211 Geneva, SwitzerlandK. HernerFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USAHung-Jin HuangDepartment of Astronomy/Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, Arizona 85721-0065, USAErica HuffJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, California 91109, USAMike JarvisDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAN JeffreyÉcole Normale Supérieure - PSLN. KuropatkinFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USAP.-F. LégetUniversité Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, F-63000 Clermont-Ferrand, FranceJ. MuirKavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, California 94305, USAJ. McCulloughDepartment of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305, USAA Navarro-AlsinaInstituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, 13083-859 São Paulo, BrazilY. OmoriKavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USAY. ParkKavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, JapanA. PorredonCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USAR. P. RollinsJodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, United KingdomA. RoodmanSLAC National Accelerator Laboratory, Menlo Park, California 94025, USAR. RosenfeldICTP South American Institute for Fundamental Research Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo 01140-070, BrazilA.J. RossCenter for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210, USAE. S. RykoffSLAC National Accelerator Laboratory, Menlo Park, California 94025, USAJavier SánchezFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USAI. Sevilla-NoarbeCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, SpainE. S. SheldonBrookhaven National Laboratory, Bldg 510, Upton, New York 11973, USAT. ShinDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAA. TrojaICTP South American Institute for Fundamental Research Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo 01140-070, BrazilI. TutusausInstitute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, 08193 Barcelona, SpainT N VargaUniversitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstrasse 1, 81679 München, GermanyN. WeaverdyckDepartment of Physics, University of Michigan, Ann Arbor, Michigan 48109, USAR.H. WechslerSLAC National Accelerator Laboratory, Menlo Park, California 94025, USAB. YannyFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USAB. YinMcWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USAY. ZhangFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USAJ. ZuntzInstitute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, United KingdomT. M. C. AbbottCerro Tololo Inter-American Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory, Casilla 603, La Serena, ChileM. AguenaLaboratório Interinstitucional de e-Astronomia—LIneA, Rua Gal. José Cristino 77, Rio de Janeiro RJ—20921-400, BrazilS. AllamFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USAJ. AnnisFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USAD. BaconInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, United KingdomE. BertinSorbonne Universités, UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, FranceS BhargavaDepartment of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, United KingdomS. L. BridleJodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, United KingdomDavid H. BrooksDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United KingdomE. Buckley-GeerFermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USA
2022en
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This work and its companion paper, Amon et al. [Phys. Rev. D 105, 023514 (2022)], present cosmic shear measurements and cosmological constraints from over 100 million source galaxies in the Dark Energy Survey (DES) Year 3 data. We constrain the lensing amplitude parameter ${S}_{8}\ensuremath{\equiv}{\ensuremath{\sigma}}_{8}\sqrt{{\mathrm{\ensuremath{\Omega}}}_{\mathrm{m}}/0.3}$ at the 3% level in $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$: ${S}_{8}=0.75{9}_{\ensuremath{-}0.023}^{+0.025}$ (68% CL). Our constraint is at the 2% level when using angular scale cuts that are optimized for the $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ analysis: ${S}_{8}=0.77{2}_{\ensuremath{-}0.017}^{+0.018}$ (68% CL). With cosmic shear alone, we find no statistically significant constraint on the dark energy equation-of-state parameter at our present statistical power. We carry out our analysis blind, and compare our measurement with constraints from two other contemporary weak lensing experiments: the Kilo-Degree Survey (KiDS) and Hyper-Suprime Camera Subaru Strategic Program (HSC). We additionally quantify the agreement between our data and external constraints from the Cosmic Microwave Background (CMB). Our DES Y3 result under the assumption of $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ is found to be in statistical agreement with Planck 2018, although favors a lower ${S}_{8}$ than the CMB-inferred value by $2.3\ensuremath{\sigma}$ (a $p$-value of 0.02). This paper explores the robustness of these cosmic shear results to modeling of intrinsic alignments, the matter power spectrum and baryonic physics. We additionally explore the statistical preference of our data for intrinsic alignment models of different complexity. The fiducial cosmic shear model is tested using synthetic data, and we report no biases greater than $0.3\ensuremath{\sigma}$ in the plane of ${S}_{8}\ifmmode\times\else\texttimes\fi{}{\mathrm{\ensuremath{\Omega}}}_{\mathrm{m}}$ caused by uncertainties in the theoretical models.
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