Cosmology from large-scale galaxy clustering and galaxy–galaxy lensing with Dark Energy Survey Science Verification data
Year: 2016
Type: article
Abstract: We present cosmological constraints from the Dark Energy Survey (DES) using a combined analysis of angular clustering of red galaxies and their cross-correlation with weak gravitational lensing of background galaxies. We use a 139 deg2 contiguous patch of DES data from the Science Verification (SV) period of observations. Using large-scale measurements, we constrain the matter density of the Universe as Ωm = 0.31 ± 0.09 and the clustering amplitude of the matter power spectrum as σ8 = 0.74 ± 0.13 after marginalizing over seven nuisance parameters and three additional cosmological parameters. This translates into S8 ≡ σ8(Ωm/0.3)0.16 = 0.74 ± 0.12 for our fiducial lens redshift bin at 0.35 < z < 0.5, while S8 = 0.78 ± 0.09 using two bins over the range 0.2 < z < 0.5. We study the robustness of the results under changes in the data vectors, modelling and systematics treatment, including photometric redshift and shear calibration uncertainties, and find consistency in the derived cosmological parameters. We show that our results are consistent with previous cosmological analyses from DES and other data sets and conclude with a joint analysis of DES angular clustering and galaxy–galaxy lensing with Planck Cosmic Microwave Background data, baryon accoustic oscillations and Supernova Type Ia measurements.
Authors: J. Kwan, C. Sánchez, J. Clampitt, J. Blazek, M. Crocce, B. Jain, J. Zuntz, A. Amara, M. R. Becker, G. M. Bernstein, C. Bonnett, J. DeRose, S. Dodelson, T. F. Eifler, E. Gaztanaga, T. Giannantonio, D. Gruen, W. G. Hartley, T. Kacprzak, D. Kirk, E. Krause, N. MacCrann, R. Miquel, Y. Park, A. J. Ross, E. Rozo, E. S. Rykoff, E. Sheldon, M. A. Troxel, R. H. Wechsler, T. M. C. Abbott, F. B. Abdalla, S. Allam, A. Benoit-Lévy, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, C. E. Cunha, C. B. D'Andrea, L. N. da Costa, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, A. E. Evrard, E. Fernandez, D. A. Finley, B. Flaugher, P. Fosalba, J. Frieman, D. W. Gerdes, R. A. Gruendl, G. Gutierrez, K. Honscheid, D. J. James, M. Jarvis, K. Kuehn, O. Lahav, M. Lima, M. A. G. Maia, J. L. Marshall, P. Martini, P. Melchior, J. J. Mohr, R. C. Nichol, B. Nord, A. A. Plazas, K. Reil, A. K. Romer, A. Roodman, E. Sanchez, V. Scarpine, I. Sevilla-Noarbe, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, D. Thomas, V. Vikram, A. R. Walker
Institutions: University of Pennsylvania, Institute for High Energy Physics, Barcelona Institute of Science and Technology, The Ohio State University, Institute of Space Sciences, University of Manchester, ETH Zurich, Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Fermi National Accelerator Laboratory, University of Chicago, Jet Propulsion Laboratory, University of Cambridge, SLAC National Accelerator Laboratory, University College London, Institució Catalana de Recerca i Estudis Avançats, University of Arizona, Brookhaven National Laboratory, Cerro Tololo Inter-American Observatory, Rhodes University, Centre National de la Recherche Scientifique, Institut d'Astrophysique de Paris, Université Pierre-et-Marie-Curie, National Observatory, Laboratório Interinstitucional de e-Astronomia, University of Illinois Urbana-Champaign, National Center for Supercomputing Applications, University of Southampton, University of Portsmouth, Excellence Cluster Universe, Ludwig-Maximilians-Universität München, University of Michigan, Australian Astronomical Observatory, Universidade de São Paulo, Texas A&M University, Princeton University, Max Planck Institute for Extraterrestrial Physics, University of Sussex, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, ICTP South American Institute for Fundamental Research, Universidade Estadual Paulista (Unesp), Oak Ridge National Laboratory, Argonne National Laboratory
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, U.S. Department of Energy, University of Pennsylvania, Ohio State University, University of Chicago, European Commission, Deutsche Forschungsgemeinschaft, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Financiadora de Estudos e Projetos, Ministério da Ciência e Tecnologia, University of Illinois at Urbana-Champaign, Science and Technology Facilities Council, European Regional Development Fund, Argonne National Laboratory
Awards: G1794164356, Dark Energy Survey: Y1 Observing Shift, Additional AGP funding - supplementary to Sussex Consolidated Grant ST/L000652/1, University of Sussex Astronomy Consolidated Grant 2017-2020, The Radio Universe: astronomy and astrophysics at the Jodrell Bank Centre for Astrophysics 2014-2017, G540951289, Cosmology and Astrophysics at Portsmouth, The Dark Energy Survey: Education and Public Outreach, G7835623888, UCL Astrophysics Consolidated Grant 2015-2018, Astrophysics and Cosmology at the University of Sussex (2011-2016), Collaborative Research: The Dark Energy Survey Data Management Operations, Astrophysics and Cosmology - Sussex Consolidated Grant
OpenAlex ID: W2343133445