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Phys Rev Lett. 2019 May 3;122(17):171301. doi: 10.1103/PhysRevLett.122.171301.

Cosmological Constraints from Multiple Probes in the Dark Energy Survey.

Abbott TMC1, Alarcon A2,3, Allam S4, Andersen P5,6, Andrade-Oliveira F7,8, Annis J4, Asorey J9, Avila S10, Bacon D10, Banik N4, Bassett BA11,12, Baxter E13, Bechtol K14,15, Becker MR16, Bernstein GM13, Bertin E17,18, Blazek J19,20, Bridle SL21, Brooks D22, Brout D13, Burke DL23,24, Calcino J5, Camacho H8,25, Campos A7,26, Carnero Rosell A8,27, Carollo D28, Carrasco Kind M29,30, Carretero J31, Castander FJ2,3, Cawthon R15, Challis P32, Chan KC2,3, Chang C33,34, Childress M35, Crocce M2,3, Cunha CE23, D'Andrea CB13, da Costa LN8,36, Davis C23, Davis TM5, De Vicente J27, DePoy DL37, DeRose J23,38, Desai S39, Diehl HT4, Dietrich JP40,41, Dodelson S26, Doel P22, Drlica-Wagner A4,34, Eifler TF42,43, Elvin-Poole J19,44, Estrada J4, Evrard AE45,46, Fernandez E31, Flaugher B4, Foley RJ47, Fosalba P2,3, Frieman J4,34, Galbany L48, García-Bellido J49, Gatti M31, Gaztanaga E2,3, Gerdes DW45,46, Giannantonio T50,51,52, Glazebrook K53, Goldstein DA54, Gruen D23,24,38, Gruendl RA29,30, Gschwend J8,36, Gutierrez G4, Hartley WG22,55, Hinton SR5, Hollowood DL47, Honscheid K19,44, Hoormann JK5, Hoyle B52,56, Huterer D46, Jain B13, James DJ57, Jarvis M13, Jeltema T47, Kasai E12,58, Kent S4,34, Kessler R33,34, Kim AG59, Kokron N23,38, Krause E42, Kron R4,34, Kuehn K60, Kuropatkin N4, Lahav O22, Lasker J33,34, Lemos P22,50,51, Lewis GF61, Li TS4,34, Lidman C62, Lima M8,25, Lin H4, Macaulay E10, MacCrann N19,44, Maia MAG8,36, March M13, Marriner J4, Marshall JL37, Martini P19,63, McMahon RG50,51, Melchior P64, Menanteau F29,30, Miquel R31,65, Mohr JJ40,41,56, Morganson E30, Muir J23, Möller A62,66, Neilsen E4, Nichol RC10, Nord B4, Ogando RLC8,36, Palmese A4, Pan YC67,68, Peiris HV22, Percival WJ69,70, Plazas AA64, Porredon A2,3, Prat J31, Romer AK71, Roodman A23,24, Rosenfeld R8,72, Ross AJ19, Rykoff ES23,24, Samuroff S26, Sánchez C13, Sanchez E27, Scarpine V4, Schindler R24, Schubnell M46, Scolnic D73, Secco LF13, Serrano S2,3, Sevilla-Noarbe I27, Sharp R62, Sheldon E74, Smith M35, Soares-Santos M75, Sobreira F8,76, Sommer NE62,66, Swann E10, Swanson MEC30, Tarle G46, Thomas D10, Thomas RC59, Troxel MA73, Tucker BE62,66, Uddin SA77, Vielzeuf P31, Walker AR1, Wang M4, Weaverdyck N46, Wechsler RH23,24,38, Weller J40,52,56, Yanny B4, Zhang B62,66, Zhang Y4, Zuntz J78; DES Collaboration.

Author information

1
Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile.
2
Institut d'Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, Spain.
3
Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, 08193 Barcelona, Spain.
4
Fermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510, USA.
5
School of Mathematics and Physics, University of Queensland, Brisbane, QLD 4072, Australia.
6
University of Copenhagen, Dark Cosmology Centre, Juliane Maries Vej 30, 2100 Copenhagen O, Denmark.
7
Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil.
8
Laboratório Interinstitucional de e-Astronomia-LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil.
9
Korea Astronomy and Space Science Institute, Yuseong-gu, Daejeon 305-348, Korea.
10
Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, United Kingdom.
11
African Institute for Mathematical Sciences, 6 Melrose Road, Muizenberg 7945, South Africa.
12
South African Astronomical Observatory, P.O.Box 9, Observatory 7935, South Africa.
13
Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
14
LSST, 933 North Cherry Avenue, Tucson, Arizona 85721, USA.
15
Physics Department, 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, Wisconsin 53706-1390, USA.
16
Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, USA.
17
CNRS, UMR 7095, Institut d'Astrophysique de Paris, F-75014 Paris, France.
18
Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, Institut d'Astrophysique de Paris, F-75014 Paris, France.
19
Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA.
20
Institute of Physics, Laboratory of Astrophysics, École Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, 1290 Versoix, Switzerland.
21
Jodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom.
22
Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom.
23
Kavli Institute for Particle Astrophysics & Cosmology, P. O. Box 2450, Stanford University, Stanford, California 94305, USA.
24
SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
25
Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP 05314-970, Brazil.
26
Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15312, USA.
27
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.
28
INAF, Astrophysical Observatory of Turin, I-10025 Pino Torinese, Italy.
29
Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, Illinois 61801, USA.
30
National Center for Supercomputing Applications, 1205 West Clark St., Urbana, Illinois 61801, USA.
31
Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra (Barcelona) Spain.
32
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, Massachusetts 02138, USA.
33
Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637, USA.
34
Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA.
35
School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom.
36
Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil.
37
George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA.
38
Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305, USA.
39
Department of Physics, IIT Hyderabad, Kandi, Telangana 502285, India.
40
Excellence Cluster Universe, Boltzmannstr. 2, 85748 Garching, Germany.
41
Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, 81679 Munich, Germany.
42
Department of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, Arizona 85721-0065, USA.
43
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, California 91109, USA.
44
Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.
45
Department of Astronomy, University of Michigan, Ann Arbor, Michigan 48109, USA.
46
Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA.
47
Santa Cruz Institute for Particle Physics, Santa Cruz, California 95064, USA.
48
PITT PACC, Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
49
Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, 28049 Madrid, Spain.
50
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, United Kingdom.
51
Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, United Kindom.
52
Universitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstr. 1, 81679 München, Germany.
53
Centre for Astrophysics & Supercomputing, Swinburne University of Technology, VIC 3122, Australia.
54
California Institute of Technology, 1200 East California Blvd, MC 249-17, Pasadena, California 91125, USA.
55
Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, Switzerland.
56
Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, 85748 Garching, Germany.
57
Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
58
Department of Physics, University of Namibia, 340 Mandume Ndemufayo Avenue, Pionierspark, Windhoek, Namibia.
59
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA.
60
Australian Astronomical Optics, Macquarie University, North Ryde, NSW 2113, Australia.
61
Sydney Institute for Astronomy, School of Physics, A28, The University of Sydney, NSW 2006, Australia.
62
The Research School of Astronomy and Astrophysics, Australian National University, ACT 2601, Australia.
63
Department of Astronomy, The Ohio State University, Columbus, Ohio 43210, USA.
64
Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, New Jersey 08544, USA.
65
Institució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, Spain.
66
ARC Centre of Excellence for All-sky Astrophysics (CAASTRO), Millers Point, NSW 2000, Australia.
67
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan.
68
Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan.
69
Department of Physics and Astronomy, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada.
70
Perimeter Institute for Theoretical Physics, 31 Caroline St. North, Waterloo, Ontario N2L 2Y5, Canada.
71
Department of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, United Kingdom.
72
ICTP South American Institute for Fundamental Research Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil.
73
Department of Physics, Duke University, Durham, North Carolina 27708, USA.
74
Brookhaven National Laboratory, Bldg 510, Upton, New York 11973, USA.
75
Brandeis University, Physics Department, 415 South Street, Waltham, Massachusetts 02453, USA.
76
Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-859 Campinas, SP, Brazil.
77
Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, California 91101, USA.
78
Institute for Astronomy, University of Edinburgh, Edinburgh EH9 3HJ, United Kingdom.

Abstract

The combination of multiple observational probes has long been advocated as a powerful technique to constrain cosmological parameters, in particular dark energy. The Dark Energy Survey has measured 207 spectroscopically confirmed type Ia supernova light curves, the baryon acoustic oscillation feature, weak gravitational lensing, and galaxy clustering. Here we present combined results from these probes, deriving constraints on the equation of state, w, of dark energy and its energy density in the Universe. Independently of other experiments, such as those that measure the cosmic microwave background, the probes from this single photometric survey rule out a Universe with no dark energy, finding w=-0.80_{-0.11}^{+0.09}. The geometry is shown to be consistent with a spatially flat Universe, and we obtain a constraint on the baryon density of Ω_{b}=0.069_{-0.012}^{+0.009} that is independent of early Universe measurements. These results demonstrate the potential power of large multiprobe photometric surveys and pave the way for order of magnitude advances in our constraints on properties of dark energy and cosmology over the next decade.

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