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

Dark Energy Survey Collaboration; Santiago Javier Avila Perez; Antonio Campos; Bob Nichol; Daniel Thomas

doi:10.1103/PhysRevD.99.123505

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

Dark Energy Survey Collaboration, Santiago Javier Avila Perez, Antonio Campos, Bob Nichol, Daniel Thomas

Research output: Contribution to journal › Article › peer-review

120 Downloads (Pure)

Abstract

We present constraints on extensions of the minimal cosmological models dominated by dark matter and dark energy, Λ CDM and w CDM, 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 Ω_k, (2) number of relativistic species N_effdifferent from the standard value of 3.046, (3) time-varying equation-of-state of dark energy described by the parameters w₀ 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 μ₀ and Σ₀that 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 Ω_k= 0.0020⁺^0.0037₋_0.0032 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^+0.19 _−0.23, −0.57^+0.93_−1.11) at pivot redshift z_p = 0.27 from DES alone, and (w_p, w_a) = (−1.01^+0.04_−0.04, −0.28^+0.37_−0.48) 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 Σ₀ = 0.43^+0.28_−0.29 from DES Y1 alone, and (Σ₀, μ₀) = (0.06^+0.08_−0.07, −0.11^+0.42_−0.46) from DES Y1 combined with external data. These modified-gravity constraints are consistent with predictions from general relativity.

Original language	English
Article number	123505
Number of pages	23
Journal	Physical Review D
Volume	99
Issue number	12
Early online date	7 Jun 2019
DOIs	https://doi.org/10.1103/PhysRevD.99.123505
Publication status	Published - 15 Jun 2019

Keywords

RCUK
STFC

Access to Document

10.1103/PhysRevD.99.123505

PhysRevD.99.123505
T. M. C. Abbott et al. (DES Collaboration). 'Dark Energy Survey year 1 results: Constraints on extended cosmological models from galaxy clustering and weak lensing'. Physical Review D, 99, 123505. © 2019 American Physical Society. All rights reserved.
Final published version, 924 KB

https://discovery.ucl.ac.uk/id/eprint/10076652/

Data availability statement for 'Dark Energy Survey year 1 results: constraints on extended cosmological models from galaxy clustering and weak lensing'.
Thomas, D. (Creator), American Physical Society, 16 Aug 2019
Dataset

Cite this

@article{9521800ea28c442c85d59c7919deff06,

title = "Dark Energy Survey year 1 results: constraints on extended cosmological models from galaxy clustering and weak lensing",

abstract = "We present constraints on extensions of the minimal cosmological models dominated by dark matter and dark energy, Λ CDM and w CDM, 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 Ωk, (2) number of relativistic species Neff different from the standard value of 3.046, (3) time-varying equation-of-state of dark energy described by the parameters w0 and wa (alternatively quoted by the values at the pivot redshift, wp, and wa), and (4) modified gravity described by the parameters μ0 and Σ0 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 Ωk = 0.0020+0.0037−0.0032 at the 68% confidence level, and the upper limit Neff < 3.28(3.55) at 68% (95%) confidence, assuming a hard prior Neff > 3.0. For the time-varying equation-of-state, we find the pivot value (wp, wa) = (−0.91+0.19 −0.23, −0.57+0.93−1.11) at pivot redshift zp = 0.27 from DES alone, and (wp, wa) = (−1.01+0.04−0.04, −0.28+0.37−0.48) at zp = 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 Σ0 = 0.43+0.28−0.29 from DES Y1 alone, and (Σ0, μ0) = (0.06+0.08−0.07, −0.11+0.42−0.46) from DES Y1 combined with external data. These modified-gravity constraints are consistent with predictions from general relativity.",

keywords = "RCUK, STFC",

author = "{Dark Energy Survey Collaboration} and Abbott, {T. M. C.} and Abdalla, {Filipe B.} and {Avila Perez}, {Santiago Javier} and M. Banerji and Baxter, {Ethan Finley} and Keith Bechtol and Becker, {M. R.} and Blazek, {Jonathan A.} and Bridle, {Sarah L.} and David Brooks and D. Brout and Burke, {David L.} and Antonio Campos and Rosell, {Aurelio Carnero} and Kind, {M. Carrasco} and Jorge Carretero and Castander, {Francisco Javier} and R. Cawthon and Chang, {Chihway L.} and A Chen and Martin Crocce and Cunha, {C. E.} and {da Costa}, {Luiz Alberto Nicolaci} and Clare Davis and Vicente, {Juan de} and J. Derose and S. Desai and Valentino, {Eleonora Di} and Diehl, {H. Thomas} and Dietrich, {J{\"o}rg P.} and Scott Dodelson and Peter Doel and Alex Drlica-Wagner and Eifler, {Tim F.} and Jack Elvin-Poole and Evrard, {A. E.} and Enrique Fernandez and A. Fert{\'e} and B. Flaugher and Pablo Fosalba and Frieman, {Joshua A.} and Juan Garc{\'i}a-Bellido and Enrique Gaztanaga and Gerdes, {David W.} and T. Giannantonio and Daniel Gruen and Gruendl, {Robert A.} and Julia Gschwend and Gutierrez, {Gaston R.} and Hartley, {William G.} and Hollowood, {Devon L.} and Klaus Honscheid and Ben Hoyle and Dragan Huterer and Bhuvnesh Jain and Jeltema, {Tesla E.} and Johnson, {M. W. G.} and Johnson, {M. W. G.} and Kim, {Alex G.} and Elisabeth Krause and Kyler Kuehn and Nikolay Kuropatkin and O. Lahav and S. Lee and P Lemos and C Leonard and Li, {T. S.} and Liddle, {A. R.} and M. Lima and H. Lin and {Geimba Maia}, {Marcio Antonio} and J.L Marshall and Paul Martini and Felipe Menanteau and Miller, {Christopher J.} and Ramon Miquel and {De Miranda Cardoso}, {J. Vin{\'i}cius} and Mohr, {Joseph J.} and J. Muir and Bob Nichol and B. Nord and Ogando, {Ricardo L. C.} and Plazas, {Andres A.} and Marco Raveri and Rollins, {R. P.} and Romer, {A. Kathy} and Aaron Roodman and R. Rosenfeld and S. Samuroff and Eusebio Sanchez and Vic Scarpine and Schindler, {Rafe H.} and Michael Schubnell and D. Scolnic and Secco, {L. F.} and Santiago Serrano and Ignacio Sevilla-Noarbe and Mathew Smith and Marcelle Soares-Santos and Flavia Sobreira and Eric Suchyta and Swanson, {Molly E. C.} and Gregory Tarle and Daniel Thomas and Troxel, {Michael A.} and Vinu Vikram and Walker, {Alistair R.} and N. Weaverdyck and Wechsler, {Risa H.} and J. Weller and Brian Yanny and Y. Zhang and Joe Zuntz",

year = "2019",

month = jun,

day = "15",

doi = "10.1103/PhysRevD.99.123505",

language = "English",

volume = "99",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "American Institute of Physics Publising LLC",

number = "12",

}

TY - JOUR

T1 - Dark Energy Survey year 1 results: constraints on extended cosmological models from galaxy clustering and weak lensing

AU - Dark Energy Survey Collaboration

AU - Abbott, T. M. C.

AU - Abdalla, Filipe B.

AU - Avila Perez, Santiago Javier

AU - Banerji, M.

AU - Baxter, Ethan Finley

AU - Bechtol, Keith

AU - Becker, M. R.

AU - Blazek, Jonathan A.

AU - Bridle, Sarah L.

AU - Brooks, David

AU - Brout, D.

AU - Burke, David L.

AU - Campos, Antonio

AU - Rosell, Aurelio Carnero

AU - Kind, M. Carrasco

AU - Carretero, Jorge

AU - Castander, Francisco Javier

AU - Cawthon, R.

AU - Chang, Chihway L.

AU - Chen, A

AU - Crocce, Martin

AU - Cunha, C. E.

AU - da Costa, Luiz Alberto Nicolaci

AU - Davis, Clare

AU - Vicente, Juan de

AU - Derose, J.

AU - Desai, S.

AU - Valentino, Eleonora Di

AU - Diehl, H. Thomas

AU - Dietrich, Jörg P.

AU - Dodelson, Scott

AU - Doel, Peter

AU - Drlica-Wagner, Alex

AU - Eifler, Tim F.

AU - Elvin-Poole, Jack

AU - Evrard, A. E.

AU - Fernandez, Enrique

AU - Ferté, A.

AU - Flaugher, B.

AU - Fosalba, Pablo

AU - Frieman, Joshua A.

AU - García-Bellido, Juan

AU - Gaztanaga, Enrique

AU - Gerdes, David W.

AU - Giannantonio, T.

AU - Gruen, Daniel

AU - Gruendl, Robert A.

AU - Gschwend, Julia

AU - Gutierrez, Gaston R.

AU - Hartley, William G.

AU - Hollowood, Devon L.

AU - Honscheid, Klaus

AU - Hoyle, Ben

AU - Huterer, Dragan

AU - Jain, Bhuvnesh

AU - Jeltema, Tesla E.

AU - Johnson, M. W. G.

AU - Kim, Alex G.

AU - Krause, Elisabeth

AU - Kuehn, Kyler

AU - Kuropatkin, Nikolay

AU - Lahav, O.

AU - Lee, S.

AU - Lemos, P

AU - Leonard, C

AU - Li, T. S.

AU - Liddle, A. R.

AU - Lima, M.

AU - Lin, H.

AU - Geimba Maia, Marcio Antonio

AU - Marshall, J.L

AU - Martini, Paul

AU - Menanteau, Felipe

AU - Miller, Christopher J.

AU - Miquel, Ramon

AU - De Miranda Cardoso, J. Vinícius

AU - Mohr, Joseph J.

AU - Muir, J.

AU - Nichol, Bob

AU - Nord, B.

AU - Ogando, Ricardo L. C.

AU - Plazas, Andres A.

AU - Raveri, Marco

AU - Rollins, R. P.

AU - Romer, A. Kathy

AU - Roodman, Aaron

AU - Rosenfeld, R.

AU - Samuroff, S.

AU - Sanchez, Eusebio

AU - Scarpine, Vic

AU - Schindler, Rafe H.

AU - Schubnell, Michael

AU - Scolnic, D.

AU - Secco, L. F.

AU - Serrano, Santiago

AU - Sevilla-Noarbe, Ignacio

AU - Smith, Mathew

AU - Soares-Santos, Marcelle

AU - Sobreira, Flavia

AU - Suchyta, Eric

AU - Swanson, Molly E. C.

AU - Tarle, Gregory

AU - Thomas, Daniel

AU - Troxel, Michael A.

AU - Vikram, Vinu

AU - Walker, Alistair R.

AU - Weaverdyck, N.

AU - Wechsler, Risa H.

AU - Weller, J.

AU - Yanny, Brian

AU - Zhang, Y.

AU - Zuntz, Joe

PY - 2019/6/15

Y1 - 2019/6/15

N2 - We present constraints on extensions of the minimal cosmological models dominated by dark matter and dark energy, Λ CDM and w CDM, 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 Ωk, (2) number of relativistic species Neff different from the standard value of 3.046, (3) time-varying equation-of-state of dark energy described by the parameters w0 and wa (alternatively quoted by the values at the pivot redshift, wp, and wa), and (4) modified gravity described by the parameters μ0 and Σ0 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 Ωk = 0.0020+0.0037−0.0032 at the 68% confidence level, and the upper limit Neff < 3.28(3.55) at 68% (95%) confidence, assuming a hard prior Neff > 3.0. For the time-varying equation-of-state, we find the pivot value (wp, wa) = (−0.91+0.19 −0.23, −0.57+0.93−1.11) at pivot redshift zp = 0.27 from DES alone, and (wp, wa) = (−1.01+0.04−0.04, −0.28+0.37−0.48) at zp = 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 Σ0 = 0.43+0.28−0.29 from DES Y1 alone, and (Σ0, μ0) = (0.06+0.08−0.07, −0.11+0.42−0.46) from DES Y1 combined with external data. These modified-gravity constraints are consistent with predictions from general relativity.

AB - We present constraints on extensions of the minimal cosmological models dominated by dark matter and dark energy, Λ CDM and w CDM, 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 Ωk, (2) number of relativistic species Neff different from the standard value of 3.046, (3) time-varying equation-of-state of dark energy described by the parameters w0 and wa (alternatively quoted by the values at the pivot redshift, wp, and wa), and (4) modified gravity described by the parameters μ0 and Σ0 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 Ωk = 0.0020+0.0037−0.0032 at the 68% confidence level, and the upper limit Neff < 3.28(3.55) at 68% (95%) confidence, assuming a hard prior Neff > 3.0. For the time-varying equation-of-state, we find the pivot value (wp, wa) = (−0.91+0.19 −0.23, −0.57+0.93−1.11) at pivot redshift zp = 0.27 from DES alone, and (wp, wa) = (−1.01+0.04−0.04, −0.28+0.37−0.48) at zp = 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 Σ0 = 0.43+0.28−0.29 from DES Y1 alone, and (Σ0, μ0) = (0.06+0.08−0.07, −0.11+0.42−0.46) from DES Y1 combined with external data. These modified-gravity constraints are consistent with predictions from general relativity.

KW - RCUK

KW - STFC

U2 - 10.1103/PhysRevD.99.123505

DO - 10.1103/PhysRevD.99.123505

M3 - Article

SN - 1550-7998

VL - 99

JO - Physical Review D

JF - Physical Review D

IS - 12

M1 - 123505

ER -

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

Abstract

Keywords

Access to Document

Fingerprint

Datasets

Data availability statement for 'Dark Energy Survey year 1 results: constraints on extended cosmological models from galaxy clustering and weak lensing'.

Cite this