Autor(es):
Abbott, T. M.C. ; Abdalla, F. B. ; Alarcon, A. ; Aleksić, J. ; Allam, S. ; Allen, S. ; Amara, A. ; Annis, J. ; Asorey, J. ; Avila, S. ; Bacon, D. ; Balbinot, E. ; Banerji, M. ; Banik, N. ; Barkhouse, W. ; Baumer, M. ; Baxter, E. ; Bechtol, K. ; Becker, M. R. ; Benoit-Lévy, A. ; Benson, B. A. ; Bernstein, G. M. ; Bertin, E. ; Blazek, J. ; Bridle, S. L. ; Brooks, D. ; Brout, D. ; Buckley-Geer, E. ; Burke, D. L. ; Busha, M. T. ; Campos, A. [UNESP] ; Capozzi, D. ; Carnero Rosell, A. ; Carrasco Kind, M. ; Carretero, J. ; Castander, F. J. ; Cawthon, R. ; Chang, C. ; Chen, N. ; Childress, M. ; Choi, A. ; Conselice, C. ; Crittenden, R. ; Crocce, M. ; Cunha, C. E. ; D'Andrea, C. B. ; Da Costa, L. N. ; Das, R. ; Davis, T. M. ; Davis, C. ; De Vicente, J. ; Depoy, D. L. ; Derose, J. ; Desai, S. ; Diehl, H. T. ; Dietrich, J. P. ; Dodelson, S. ; Doel, P. ; Drlica-Wagner, A. ; Eifler, T. F. ; Elliott, A. E. ; Elsner, F. ; Elvin-Poole, J. ; Estrada, J. ; Evrard, A. E. ; Fang, Y. ; Fernandez, E. ; Ferté, A. ; Finley, D. A. ; Flaugher, B. ; Fosalba, P. ; Friedrich, O. ; Frieman, J. ; García-Bellido, J. ; Garcia-Fernandez, M. ; Gatti, M. ; Gaztanaga, E. ; Gerdes, D. W. ; Giannantonio, T. ; Gill, M. S.S. ; Glazebrook, K. ; Goldstein, D. A. ; Gruen, D. ; Gruendl, R. A. ; Gschwend, J. ; Gutierrez, G. ; Hamilton, S. ; Hartley, W. G. ; Hinton, S. R. ; Honscheid, K. ; Hoyle, B. ; Huterer, D. ; Jain, B. ; James, D. J. ; Jarvis, M. ; Jeltema, T. ; Johnson, M. D. ; Johnson, M. W.G. ; Kacprzak, T. ; Kent, S. ; Kim, A. G. ; King, A. ; Kirk, D. ; Kokron, N. ; Kovacs, A. ; Krause, E. ; Krawiec, C. ; Kremin, A. ; Kuehn, K. ; Kuhlmann, S. ; Kuropatkin, N. ; Lacasa, F. [UNESP] ; Lahav, O. ; Li, T. S. ; Liddle, A. R. ; Lidman, C. ; Lima, M. ; Lin, H. ; Maccrann, N. ; Maia, M. A.G. ; Makler, M. ; Manera, M. ; March, M. ; Marshall, J. L. ; Martini, P. ; McMahon, R. G. ; Melchior, P. ; Menanteau, F. ; Miquel, R. ; Miranda, V. ; Mudd, D. ; Muir, J. ; Möller, A. ; Neilsen, E. ; Nichol, R. C. ; Nord, B. ; Nugent, P. ; Ogando, R. L.C. ; Palmese, A. ; Peacock, J. ; Peiris, H. V. ; Peoples, J. ; Percival, W. J. ; Petravick, D. ; Plazas, A. A. ; Porredon, A. ; Prat, J. ; Pujol, A. ; Rau, M. M. ; Refregier, A. ; Ricker, P. M. ; Roe, N. ; Rollins, R. P. ; Romer, A. K. ; Roodman, A. ; Rosenfeld, R. [UNESP] ; Ross, A. J. ; Rozo, E. ; Rykoff, E. S. ; Sako, M. ; Salvador, A. I. ; Samuroff, S. ; Sánchez, C. ; Sanchez, E. ; Santiago, B. ; Scarpine, V. ; Schindler, R. ; Scolnic, D. ; Secco, L. F. ; Serrano, S. ; Sevilla-Noarbe, I. ; Sheldon, E. ; Smith, R. C. ; Smith, M. ; Smith, J. ; Soares-Santos, M. ; Sobreira, F. ; Suchyta, E. ; Tarle, G. ; Thomas, D. ; Troxel, M. A. ; Tucker, D. L. ; Tucker, B. E. ; Uddin, S. A. ; Varga, T. N. ; Vielzeuf, P. ; Vikram, V. ; Vivas, A. K. ; Walker, A. R. ; Wang, M. ; Wechsler, R. H. ; Weller, J. ; Wester, W. ; Wolf, R. C. ; Yanny, B. ; Yuan, F. ; Zenteno, A. ; Zhang, B. ; Zhang, Y. ; Zuntz, J.
Data: 2022
Identificador Persistente: http://hdl.handle.net/11449/228586
Origem: Oasisbr
Descrição
Made available in DSpace on 2022-04-29T08:27:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-08-15
We present cosmological results from a combined analysis of galaxy clustering and weak gravitational lensing, using 1321 deg2 of griz imaging data from the first year of the Dark Energy Survey (DES Y1). We combine three two-point functions: (i) the cosmic shear correlation function of 26 million source galaxies in four redshift bins, (ii) the galaxy angular autocorrelation function of 650,000 luminous red galaxies in five redshift bins, and (iii) the galaxy-shear cross-correlation of luminous red galaxy positions and source galaxy shears. To demonstrate the robustness of these results, we use independent pairs of galaxy shape, photometric-redshift estimation and validation, and likelihood analysis pipelines. To prevent confirmation bias, the bulk of the analysis was carried out while blind to the true results; we describe an extensive suite of systematics checks performed and passed during this blinded phase. The data are modeled in flat ΛCDM and wCDM cosmologies, marginalizing over 20 nuisance parameters, varying 6 (for ΛCDM) or 7 (for wCDM) cosmological parameters including the neutrino mass density and including the 457×457 element analytic covariance matrix. We find consistent cosmological results from these three two-point functions and from their combination obtain S8≡σ8(Ωm/0.3)0.5=0.773-0.020+0.026 and Ωm=0.267-0.017+0.030 for ΛCDM; for wCDM, we find S8=0.782-0.024+0.036, Ωm=0.284-0.030+0.033, and w=-0.82-0.20+0.21 at 68% C.L. The precision of these DES Y1 constraints rivals that from the Planck cosmic microwave background measurements, allowing a comparison of structure in the very early and late Universe on equal terms. Although the DES Y1 best-fit values for S8 and Ωm are lower than the central values from Planck for both ΛCDM and wCDM, the Bayes factor indicates that the DES Y1 and Planck data sets are consistent with each other in the context of ΛCDM. Combining DES Y1 with Planck, baryonic acoustic oscillation measurements from SDSS, 6dF, and BOSS and type Ia supernovae from the Joint Lightcurve Analysis data set, we derive very tight constraints on cosmological parameters: S8=0.802±0.012 and Ωm=0.298±0.007 in ΛCDM and w=-1.00-0.04+0.05 in wCDM. Upcoming Dark Energy Survey analyses will provide more stringent tests of the ΛCDM model and extensions such as a time-varying equation of state of dark energy or modified gravity.
Cerro Tololo Inter-American Observatory National Optical Astronomy Observatory, Casilla 603
Department of Physics and Electronics Rhodes University, P.O. Box 94
Department of Physics and Astronomy University College London, Gower Street
Institute of Space Sciences IEEC-CSIC Campus UAB, Carrer de Can Magrans, s/n
Institut de Física d'Altes Energies (IFAE) Barcelona Institute of Science and Technology Campus UAB
Fermi National Accelerator Laboratory, P.O. Box 500
Department of Physics Stanford University, 382 Via Pueblo Mall
Department of Physics ETH Zurich, Wolfgang-Pauli-Strasse 16
School of Mathematics and Physics University of Queensland
ARC Centre of Excellence for All-sky Astrophysics (CAASTRO)
Institute of Cosmology and Gravitation University of Portsmouth
Instituto de Fisica Teorica UAM/CSIC Universidad Autonoma de Madrid
Department of Physics University of Surrey
Institute of Astronomy University of Cambridge, Madingley Road
Kavli Institute for Cosmology University of Cambridge, Madingley Road
University of North Dakota Department of Physics and Astrophysics Witmer Hall
Kavli Institute for Particle Astrophysics and Cosmology Stanford University, P.O. Box 2450
SLAC National Accelerator Laboratory
Department of Physics and Astronomy University of Pennsylvania
LSST, 933 North Cherry Avenue
CNRS UMR 7095 Institut d'Astrophysique de Paris
Sorbonne Universités UPMC Univ Paris 06 UMR 7095 Institut d'Astrophysique de Paris
Kavli Institute for Cosmological Physics University of Chicago
Institute of Physics Laboratory of Astrophysics École Polytechnique Fédérale de Lausanne (EPFL) Observatoire de Sauverny
Center for Cosmology and Astro-Particle Physics Ohio State University
Jodrell Bank Center for Astrophysics School of Physics and Astronomy University of Manchester, Oxford Road
ICTP South American Institute for Fundamental Research Instituto de Física Teórica Universidade Estadual Paulista
Laboratório Interinstitucional de E-Astronomia - LIneA, Rua Gal. José Cristino 77
Observatório Nacional, Rua Gal. José Cristino 77
National Center for Supercomputing Applications, 1205 West Clark Street
Department of Astronomy University of Illinois, 1002 West Green Street
School of Physics and Astronomy University of Southampton
University of Nottingham School of Physics and Astronomy
Department of Physics University of Michigan
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy Department of Physics and Astronomy Texas A and M University
Department of Physics IIT Hyderabad
Excellence Cluster Universe, Boltzmannstr. 2
Faculty of Physics Ludwig-Maximilians-Universität, Scheinerstr. 1
Department of Physics California Institute of Technology
Jet Propulsion Laboratory California Institute of Technology, 4800 Oak Grove Drive
Department of Physics Ohio State University
Department of Astronomy University of Michigan
Institute for Astronomy University of Edinburgh
Universitäts-Sternwarte Fakultät für Physik Ludwig-Maximilians Universität München, Scheinerstr. 1
Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse
Centre for Astrophysics and Supercomputing Swinburne University of Technology
Department of Astronomy University of California Berkeley 501 Campbell Hall
Lawrence Berkeley National Laboratory, 1 Cyclotron Road
Astronomy Department University of Washington, Box 351580
Santa Cruz Institute for Particle Physics
Departamento de Física Matemática Instituto de Física Universidade de São Paulo, CP 66318
Australian Astronomical Observatory
Argonne National Laboratory, 9700 South Cass Avenue
ICRA Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud 150
Department of Astronomy Ohio State University
Department of Astrophysical Sciences Princeton University Peyton Hall
Institució Catalana de Recerca i Estudis Avançats
Research School of Astronomy and Astrophysics Australian National University
Department of Physics and Astronomy Pevensey Building University of Sussex
Department of Physics University of Arizona
Instituto de Física UFRGS, Caixa Postal 15051
Brookhaven National Laboratory
Austin Peay State University Dept. Physics-Astronomy, P.O. Box 4608
Instituto de Física Gleb Wataghin Universidade Estadual de Campinas
Computer Science and Mathematics Division Oak Ridge National Laboratory
Purple Mountain Observatory Chinese Academy of Sciences
ICTP South American Institute for Fundamental Research Instituto de Física Teórica Universidade Estadual Paulista
