Dark Energy Survey year 1 results: Constraints on extended cosmological models from galaxy clustering and weak lensing

T. M. C. Abbott; F. B. Abdalla; S. Avila; M. Banerji; E. Baxter; K. Bechtol; M. R. Becker; E. Bertin; J. Blazek; S. L. Bridle; D. Brooks; D. Brout; D. L. Burke; A. Campos; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; F. J. Castander; R. Cawthon; C. Chang; A. Chen; M. Crocce; C. E. Cunha; L. N. da Costa; C. Davis; J. De Vicente; J. DeRose; S. Desai; E. Di Valentino; H. T. Diehl; J. P. Dietrich; S. Dodelson; P. Doel; A. Drlica-Wagner; T. F. Eifler; J. Elvin-Poole; A. E. Evrard; E. Fernandez; A. Ferte; B. Flaugher; P. Fosalba; J. Frieman; J. Garcia-Bellido; E. Gaztanaga; D. W. Gerdes; T. Giannantonio; D. Gruen; R. A. Gruendl; J. Gschwend; G. Gutierrez; W. G. Hartley; D. L. Hollowood; K. Honscheid; B. Hoyle; D. Huterer; B. Jain; T. Jeltema; M. W. G. Johnson; M. D. Johnson; A. G. Kim; E. Krause; K. Kuehn; N. Kuropatkin; O. Lahav; S. Lee; P. Lemos; C. D. Leonard; T. S. Li; A. R. Liddle; M. Lima; H. Lin; M. A. G. Maia; J. L. Marshall; P. Martini; F. Menanteau; C. J. Miller; R. Miquel; V. Miranda; J. J. Mohr; J. Muir; R. C. Nichol; B. Nord; R. L. C. Ogando; A. A. Plazas; M. Raveri; R. P. Rollins; A. K. Romer; A. Roodman; R. Rosenfeld; S. Samuroff; E. Sanchez; V. Scarpine; R. Schindler; M. Schubnell; D. Scolnic; L. F. Secco; S. Serrano; I. Sevilla-Noarbe; M. Smith; M. Soares-Santos; DES Collaboration

doi:10.1103/PhysRevD.99.123505

Back

Dark Energy Survey year 1 results: Constraints on extended cosmological models from galaxy clustering and weak lensing

Journal article

Open access

Peer reviewed

Dark Energy Survey year 1 results: Constraints on extended cosmological models from galaxy clustering and weak lensing

T. M. C. Abbott, F. B. Abdalla, S. Avila, M. Banerji, E. Baxter, K. Bechtol, M. R. Becker, E. Bertin, J. Blazek, S. L. Bridle, …

Physical review. D, Vol.99(12), p.1

06/07/2019

DOI: https://doi.org/10.1103/PhysRevD.99.123505

Abstract

Astronomy & Astrophysics

Physics, Particles & Fields

Science & Technology

Physical Sciences

Physics

We present constraints on extensions of the minimal cosmological models dominated by dark matter and dark energy, Lambda CDM and wCDM, by using a combined analysis of galaxy clustering and weak gravitational lensing from the first-year data of the Dark Energy Survey (DES Y1) in combination with external data. We consider four extensions of the minimal dark energy-dominated scenarios: (1) nonzero curvature Omega(k), (2) number of relativistic species N-eff different from the standard value of 3.046, (3) time-varying equation-of-state of dark energy described by the parameters w(0) and w(a) (alternatively quoted by the values at the pivot redshift, w(p), and w(a)), and (4) modified gravity described by the parameters is mu(0) and Sigma(0) that modify the metric potentials. We also consider external information from Planck cosmic microwave background measurements; baryon acoustic oscillation measurements from SDSS, 6dF, and BOSS; redshift-space distortion measurements from BOSS; and type Ia supernova information from the Pantheon compilation of datasets. Constraints on curvature and the number of relativistic species are dominated by the external data; when these are combined with DES Y1, we find Omega(k) = 0.0020(-0.0032)(+0.0037) at the 68% confidence level, and the upper limit N-eff < 3.28(3.55) at 68% (95%) confidence, assuming a hard prior N-eff > 3.0. For the time-varying equation-of-state, we find the pivot value (w(p), w(a)) = (-0.91(-0.23)(+0.19), -0.57(-1.11)(+0.93)) at pivot redshift z(p )= 0.27 from DES alone, and (w(p), w(a)) = (-1.01(-0.04)(+0.04), -0.28(-0.48)(+0.37)) at z(p) = 0.20 from DES Y1 combined with external data; in either case we find no evidence for the temporal variation of the equation of state. For modified gravity, we find the present-day value of the relevant parameters to be Sigma(0) = 0.43(-)(0.29)(+0.28) from DES Y1 alone, and (Sigma(0), mu(0)) = (0.06(-0.07)(+0.08), -0.11(-0.46)(+0.42)) from DES Y1 combined with external data. These modified-gravity constraints are consistent with predictions from general relativity.

Files and links (1)

url

https://doi.org/10.1103/PhysRevD.99.123505View

Published (Version of record) Open

Metrics

1 Record Views

See more details

Details

Title: Dark Energy Survey year 1 results: Constraints on extended cosmological models from galaxy clustering and weak lensing
Creators: T. M. C. Abbott - Cerro Tololo Inter-American Observatory
F. B. Abdalla - Rhodes University
S. Avila - University of Portsmouth
M. Banerji - University of Cambridge
E. Baxter - University of Pennsylvania
K. Bechtol - University of Wisconsin–Madison
M. R. Becker - Argonne National Laboratory
E. Bertin - Centre National de la Recherche Scientifique
J. Blazek - Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA
S. L. Bridle - University of Manchester
D. Brooks - University College London
D. Brout - University of Pennsylvania
D. L. Burke - SLAC National Accelerator Laboratory
A. Campos - Universidade Estadual Paulista (Unesp)
A. Carnero Rosell - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
M. Carrasco Kind - University of Illinois Urbana-Champaign
J. Carretero - Institute for High Energy Physics
F. J. Castander - Institut d'Estudis Espacials de Catalunya
R. Cawthon - University of Wisconsin–Madison
C. Chang - University of Chicago
A. Chen - University of Michigan
M. Crocce - Institut d'Estudis Espacials de Catalunya
C. E. Cunha - Stanford University
L. N. da Costa - Laboratório Interinstitucional de e-Astronomia
C. Davis - University of Louisville
J. De Vicente - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
J. DeRose - Stanford University
S. Desai - Indian Institute of Technology Hyderabad
E. Di Valentino - University of Manchester
H. T. Diehl - Fermi National Accelerator Laboratory
J. P. Dietrich - Excellence Cluster Universe
S. Dodelson - Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA
P. Doel - University College London
A. Drlica-Wagner - Fermi National Accelerator Laboratory
T. F. Eifler - Jet Propulsion Laboratory
J. Elvin-Poole - The Ohio State University
A. E. Evrard - University of Michigan
E. Fernandez - Barcelona Inst Sci & Technol, IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain
A. Ferte - UK Astronomy Technology Centre
B. Flaugher - Fermi National Accelerator Laboratory
P. Fosalba - Institut d'Estudis Espacials de Catalunya
J. Frieman - Fermi National Accelerator Laboratory
J. Garcia-Bellido - Universidad Autónoma de Madrid
E. Gaztanaga - S&N
D. W. Gerdes - University of Michigan
T. Giannantonio - University of Cambridge
D. Gruen - Kavli Institute for Particle Astrophysics and Cosmology
R. A. Gruendl - National Center for Supercomputing Applications
J. Gschwend - Laboratório Interinstitucional de e-Astronomia
G. Gutierrez - Fermi National Accelerator Laboratory
W. G. Hartley - ETH Zurich
D. L. Hollowood - Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
K. Honscheid - The Ohio State University
B. Hoyle - Max Planck Institute for Extraterrestrial Physics
D. Huterer - University of Michigan
B. Jain - University of Pennsylvania
T. Jeltema - Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
M. W. G. Johnson - National Center for Supercomputing Applications
M. D. Johnson - National Center for Supercomputing Applications
A. G. Kim - Lawrence Berkeley National Laboratory
E. Krause - University of Arizona
K. Kuehn - Australian Astronomical Observatory
N. Kuropatkin - Fermi National Accelerator Laboratory
O. Lahav - University College London
S. Lee - The Ohio State University
P. Lemos - University of Cambridge
C. D. Leonard - Carnegie Mellon University
T. S. Li - Fermi National Accelerator Laboratory
A. R. Liddle - Univ Edinburgh, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
M. Lima - Laboratório Interinstitucional de e-Astronomia
H. Lin - Fermi National Accelerator Laboratory
M. A. G. Maia - Laboratório Interinstitucional de e-Astronomia
J. L. Marshall - Mitchell Institute
P. Martini - The Ohio State University
F. Menanteau - National Center for Supercomputing Applications
C. J. Miller - University of Michigan
R. Miquel - Institució Catalana de Recerca i Estudis Avançats
V. Miranda - University of Arizona
J. J. Mohr - Excellence Cluster Universe
J. Muir - Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, POB 2450, Stanford, CA 94305 USA
R. C. Nichol - University of Portsmouth
B. Nord - Fermi National Accelerator Laboratory
R. L. C. Ogando - Laboratório Interinstitucional de e-Astronomia
A. A. Plazas - Jet Propulsion Laboratory
M. Raveri - University of Chicago
R. P. Rollins - Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Oxford Rd, Manchester M13 9PL, Lancs, England
A. K. Romer - University of Sussex
A. Roodman - SLAC National Accelerator Laboratory
R. Rosenfeld - Laboratório Interinstitucional de e-Astronomia
S. Samuroff - Carnegie Mellon University
E. Sanchez - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
V. Scarpine - Fermi National Accelerator Laboratory
R. Schindler - SLAC National Accelerator Laboratory
M. Schubnell - University of Michigan
D. Scolnic - University of Chicago
L. F. Secco - University of Pennsylvania
S. Serrano - Institute of Space Sciences
I. Sevilla-Noarbe - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
M. Smith - University of Southampton
M. Soares-Santos - Brandeis University, Martin A. Fisher School of Physics
DES Collaboration
Publication Details: Physical review. D, Vol.99(12), p.1
Publisher: Amer Physical Soc
Number of pages: 23
Grant note: University of Edinburgh University of Chicago U.S. Department of Energy; United States Department of Energy (DOE) Kavli Institute of Cosmological Physics at the University of Chicago Lawrence Berkeley National Laboratory; United States Department of Energy (DOE) Ministerio da Ciencia, Tecnologia e Inovacao; Spanish Government Ministry of Science and Education of Spain; Spanish Government Institut de Ciencies de l'Espai (IEEC/CSIC) Ohio State University University of Pennsylvania
Identifiers: 9924552840801921
Academic Unit: Martin A. Fisher School of Physics
Language: English
Resource Type: Journal article

Dark Energy Survey year 1 results: Constraints on extended cosmological models from galaxy clustering and weak lensing

Abstract

Files and links (1)

Metrics

Details

Brandeis University Social media