Dark Energy Survey Year 3 results: Curved-sky weak lensing mass map reconstruction
N JeffreySorbonne UniversitéM. GattiDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAC. ChangDepartment of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USAL WhitewayDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKR. DeminaInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), SpainAndrás KovácsInstituto de Astrofísica de Canarias (IAC), Calle Vía Láctea, E-38200 La Laguna, Tenerife, SpainG PollinaUniversitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstr. 1, D-81679 München, GermanyDavid BaconInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKNico HamausUniversitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstr. 1, D-81679 München, GermanyTomasz KacprzakDepartment of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, SwitzerlandO. LahavDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKFrançois LanusseAstrophysique, Instrumentation et ModélisationB MawdsleyInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKS. NadathurInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UKJean‐Luc StarckUniversité Paris-SaclayP VielzeufInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), SpainD ZeurcherDepartment of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, SwitzerlandA. AlarconArgonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USAA. AmonKavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USAK. BechtolPhysics Department, 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, WI 53706-1390, USAG. M. BernsteinDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAA. CamposDepartment of Physics, Carnegie Mellon University, Pittsburgh, PA 15312, USAA. Carnero RosellLaboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, BrazilM. Carrasco KindDepartment of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USAR. CawthonPhysics Department, 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, WI 53706-1390, USAR ChenDepartment of Physics, Duke University Durham, NC 27708, USAA. ChoiCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAJ. CorderoJodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UKC. DavisStanford UniversityJoseph DeRoseDepartment of Astronomy, University of California, Berkeley, 501 Campbell Hall, Berkeley, CA 94720, USAC. DouxDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAA. Drlica-WagnerDepartment of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USAK. EckertDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAF. ElsnerDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKJ. Elvin-PooleCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAS. EverettA. FertéJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USAG. GianniniInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), SpainD. GruenSLAC National Accelerator Laboratory, Menlo Park, CA 94025, USAR. A. GruendlCenter for Astrophysical Surveys, National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USAI. HarrisonJodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UKW G HartleyDepartment of Astronomy, University of Geneva, ch. d’Écogia 16, CH-1290 Versoix, SwitzerlandK. HernerFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAEric HuffJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USADragan HutererDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAN. KuropatkinFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAMike JarvisDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAP.-F. LégetStanford UniversityN. MacCrannDepartment of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, UKJ. McCulloughStanford UniversityJ. MuirStanford UniversityJ. MylesKavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USAA Navarro-AlsinaInstituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, SP 13083-859, BrazilShivam PandeyDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAJ. PratDepartment of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USAMarco RaveriKavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USAR. P. RollinsJodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UKA.J. RossCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USAE. S. RykoffKavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USAC. SánchezDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAL F SeccoDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAI. Sevilla-NoarbeCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid 28040, SpainE. SheldonBrookhaven National Laboratory, Bldg 510, Upton, NY 11973, USAT. ShinDepartment of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USAM. A. TroxelDepartment of Physics, Duke University Durham, NC 27708, USAI. TutusausInstitut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, SpainT N VargaMax Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, GermanyB. YannyFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAB. YinDepartment of Physics, Carnegie Mellon University, Pittsburgh, PA 15312, USAY. ZhangFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAJ. ZuntzUniversity of EdinburghT. M. C. AbbottCerro Tololo Inter-American Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory, Casilla 603, La Serena, ChileM. AguenaDepartamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP 05314-970, BrazilS. AllamFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAF. Andrade-OliveiraInstituto de Física Teórica, Universidade Estadual Paulista, São Paulo, BrazilM. R. BeckerArgonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USAE. BertinCNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, FranceS BhargavaDepartment of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UKDavid BrooksDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKD. L. BurkeKavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USAJ. CarreteroInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), SpainF. J. CastanderInstitut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, SpainChristopher J. ConseliceUniversity of Nottingham, School of Physics and Astronomy, Nottingham NG7 2RD, UKM. CostanziINAF-Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, I-34143 Trieste, ItalyM. CrocceInstitute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainL. N. da CostaLaboratório Interinstitucional de e-AstronomiaM. E. S. PereiraDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAJ. De VicenteCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid 28040, SpainS. DesaiDepartment of Physics, IIT Hyderabad, Kandi, Telangana 502285, IndiaH. T. DiehlFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAJ. P. DietrichFaculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, D-81679 Munich, GermanyP. DoelDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKI. FerreroInstitute of Theoretical Astrophysics, University of Oslo. P.O. Box 1029 Blindern, NO-0315 Oslo, NorwayB. FlaugherFermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USAP. FosalbaInstitute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainJ. García-BellidoInstituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, SpainE. GaztañagaInstitute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, SpainD. W. GerdesDepartment of Astronomy, University of Michigan, Ann Arbor, MI 48109, USAT. GiannantonioInstitute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UKJ. GschwendLaboratório Interinstitucional de e-Astronomia
2021en
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ABSTRACT We present reconstructed convergence maps, mass maps, from the Dark Energy Survey (DES) third year (Y3) weak gravitational lensing data set. The mass maps are weighted projections of the density field (primarily dark matter) in the foreground of the observed galaxies. We use four reconstruction methods, each is a maximum a posteriori estimate with a different model for the prior probability of the map: Kaiser–Squires, null B-mode prior, Gaussian prior, and a sparsity prior. All methods are implemented on the celestial sphere to accommodate the large sky coverage of the DES Y3 data. We compare the methods using realistic ΛCDM simulations with mock data that are closely matched to the DES Y3 data. We quantify the performance of the methods at the map level and then apply the reconstruction methods to the DES Y3 data, performing tests for systematic error effects. The maps are compared with optical foreground cosmic-web structures and are used to evaluate the lensing signal from cosmic-void profiles. The recovered dark matter map covers the largest sky fraction of any galaxy weak lensing map to date.
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