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Title: Cosmological Constraints from Multiple Probes in the Dark Energy Survey

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 Omega(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.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Science Foundation (NSF); USDOE Office of Science - Office of High Energy Physics
OSTI Identifier:
1571283
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 122; Journal Issue: 17
Country of Publication:
United States
Language:
English

Citation Formats

Abbott, T. M. C., Alarcon, A., Allam, S., Andersen, P., Andrade-Oliveira, F., Annis, J, Asorey, J., Avila, S., Bacon, D., Banik, N., and Becker, M. R. Cosmological Constraints from Multiple Probes in the Dark Energy Survey. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.171301.
Abbott, T. M. C., Alarcon, A., Allam, S., Andersen, P., Andrade-Oliveira, F., Annis, J, Asorey, J., Avila, S., Bacon, D., Banik, N., & Becker, M. R. Cosmological Constraints from Multiple Probes in the Dark Energy Survey. United States. doi:10.1103/PhysRevLett.122.171301.
Abbott, T. M. C., Alarcon, A., Allam, S., Andersen, P., Andrade-Oliveira, F., Annis, J, Asorey, J., Avila, S., Bacon, D., Banik, N., and Becker, M. R. Wed . "Cosmological Constraints from Multiple Probes in the Dark Energy Survey". United States. doi:10.1103/PhysRevLett.122.171301.
@article{osti_1571283,
title = {Cosmological Constraints from Multiple Probes in the Dark Energy Survey},
author = {Abbott, T. M. C. and Alarcon, A. and Allam, S. and Andersen, P. and Andrade-Oliveira, F. and Annis, J and Asorey, J. and Avila, S. and Bacon, D. and Banik, N. and Becker, M. R.},
abstractNote = {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 Omega(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.},
doi = {10.1103/PhysRevLett.122.171301},
journal = {Physical Review Letters},
number = 17,
volume = 122,
place = {United States},
year = {2019},
month = {5}
}

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