Probing ΛcDM cosmology with the Evolutionary Map of the Universe survey

José Luis Bernal; Alvise Raccanelli; Ely D. Kovetz; David Parkinson; Ray P. Norris; George Danforth; Courtney Schmitt

doi:10.1088/1475-7516/2019/02/030

Probing ΛcDM cosmology with the Evolutionary Map of the Universe survey

José Luis Bernal, Alvise Raccanelli, Ely D. Kovetz, David Parkinson, Ray P. Norris, George Danforth, Courtney Schmitt

Research output: Contribution to journal › Review article › peer-review

14 Scopus citations

Abstract

The Evolutionary Map of the Universe (EMU) is an all-sky survey in radio-continuum which uses the Australian SKA Pathfinder (ASKAP). Using galaxy angular power spectrum and the integrated Sachs-Wolfe effect, we study the potential of EMU to constrain models beyond ΛCDM (i.e., local primordial non-Gaussianity, dynamical dark energy, spatial curvature and deviations from general relativity), for different design sensitivities. We also include a multi-tracer analysis, distinguishing between star-forming galaxies and galaxies with an active galactic nucleus, to further improve EMU's potential. We find that EMU could measure the dark energy equation of state parameters around 35% more precisely than existing constraints, and that the constraints on f _NL and modified gravity parameters will improve up to a factor ∼2 with respect to Planck and redshift space distortions measurements. With this work we demonstrate the promising potential of EMU to contribute to our understanding of the Universe.

Original language	English
Article number	030
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2019
Issue number	2
DOIs	https://doi.org/10.1088/1475-7516/2019/02/030
State	Published - 14 Feb 2019
Externally published	Yes

Keywords

Cosmological parameters from LSS
Power spectrum
Redshift surveys

ASJC Scopus subject areas

Astronomy and Astrophysics

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10.1088/1475-7516/2019/02/030

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title = "Probing ΛcDM cosmology with the Evolutionary Map of the Universe survey",

abstract = " The Evolutionary Map of the Universe (EMU) is an all-sky survey in radio-continuum which uses the Australian SKA Pathfinder (ASKAP). Using galaxy angular power spectrum and the integrated Sachs-Wolfe effect, we study the potential of EMU to constrain models beyond ΛCDM (i.e., local primordial non-Gaussianity, dynamical dark energy, spatial curvature and deviations from general relativity), for different design sensitivities. We also include a multi-tracer analysis, distinguishing between star-forming galaxies and galaxies with an active galactic nucleus, to further improve EMU's potential. We find that EMU could measure the dark energy equation of state parameters around 35% more precisely than existing constraints, and that the constraints on f NL and modified gravity parameters will improve up to a factor ∼2 with respect to Planck and redshift space distortions measurements. With this work we demonstrate the promising potential of EMU to contribute to our understanding of the Universe.",

keywords = "Cosmological parameters from LSS, Power spectrum, Redshift surveys",

author = "Bernal, {Jos{\'e} Luis} and Alvise Raccanelli and Kovetz, {Ely D.} and David Parkinson and Norris, {Ray P.} and George Danforth and Courtney Schmitt",

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AU - Bernal, José Luis

AU - Raccanelli, Alvise

AU - Kovetz, Ely D.

AU - Parkinson, David

AU - Norris, Ray P.

AU - Danforth, George

AU - Schmitt, Courtney

PY - 2019/2/14

Y1 - 2019/2/14

N2 - The Evolutionary Map of the Universe (EMU) is an all-sky survey in radio-continuum which uses the Australian SKA Pathfinder (ASKAP). Using galaxy angular power spectrum and the integrated Sachs-Wolfe effect, we study the potential of EMU to constrain models beyond ΛCDM (i.e., local primordial non-Gaussianity, dynamical dark energy, spatial curvature and deviations from general relativity), for different design sensitivities. We also include a multi-tracer analysis, distinguishing between star-forming galaxies and galaxies with an active galactic nucleus, to further improve EMU's potential. We find that EMU could measure the dark energy equation of state parameters around 35% more precisely than existing constraints, and that the constraints on f NL and modified gravity parameters will improve up to a factor ∼2 with respect to Planck and redshift space distortions measurements. With this work we demonstrate the promising potential of EMU to contribute to our understanding of the Universe.

AB - The Evolutionary Map of the Universe (EMU) is an all-sky survey in radio-continuum which uses the Australian SKA Pathfinder (ASKAP). Using galaxy angular power spectrum and the integrated Sachs-Wolfe effect, we study the potential of EMU to constrain models beyond ΛCDM (i.e., local primordial non-Gaussianity, dynamical dark energy, spatial curvature and deviations from general relativity), for different design sensitivities. We also include a multi-tracer analysis, distinguishing between star-forming galaxies and galaxies with an active galactic nucleus, to further improve EMU's potential. We find that EMU could measure the dark energy equation of state parameters around 35% more precisely than existing constraints, and that the constraints on f NL and modified gravity parameters will improve up to a factor ∼2 with respect to Planck and redshift space distortions measurements. With this work we demonstrate the promising potential of EMU to contribute to our understanding of the Universe.

KW - Cosmological parameters from LSS

KW - Power spectrum

KW - Redshift surveys

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DO - 10.1088/1475-7516/2019/02/030

M3 - Review article

AN - SCOPUS:85062268954

SN - 1475-7516

VL - 2019

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

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M1 - 030

ER -

Probing ΛcDM cosmology with the Evolutionary Map of the Universe survey

Abstract

Keywords

ASJC Scopus subject areas

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