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Title: Constraints on Non-flat Cosmologies with Massive Neutrinos after Planck2015

Journal Article · · The Astrophysical Journal (Online)
ORCiD logo [1];  [2]; ORCiD logo [3];  [4]; ORCiD logo [5]
  1. Chinese Academy of Sciences, Beijing (China). National Astronomical Observatories, Key Lab. for Computational Astrophysics
  2. Kansas State Univ., Manhattan, KS (United States). Dept. of Physics
  3. Beijing Normal Univ., Beijing (China). Dept. of Astronomy; Univ. of Silesia, Katowice (Poland). Inst. of Physics, Dept. of Astrophysics and Cosmology
  4. Capital Normal Univ, Beijing (China). Dept. of Physics
  5. Beijing Normal Univ., Beijing (China). Dept. of Astronomy

In this study, we investigate two dark energy cosmological models (i.e., the ΛCDM and ΦCDM models) with massive neutrinos assuming two different neutrino mass hierarchies in both the spatially flat and non-flat scenarios, where in the ΦCDM model the scalar field possesses an inverse power-law potential, V(Φ) ∝ Φ (α > 0). Cosmic microwave background data from Planck 2015, baryon acoustic oscillation data from 6dFGS, SDSS-MGS, BOSS-LOWZ and BOSS CMASS-DR11, the joint light-curve analysis compilation of SNe Ia apparent magnitude observations, and the Hubble Space Telescope H 0 prior, are jointly employed to constrain the model parameters. We first determine constraints assuming three species of degenerate massive neutrinos. In the spatially flat (non-flat) ΛCDM model, the sum of neutrino masses is bounded as Σm ν < 0.165(0.299) eV at 95% confidence level (CL). Correspondingly, in the flat (non-flat) ΦCDM model, we find Σm ν < 0.164(0.301) eV at 95% CL. The inclusion of spatial curvature as a free parameter results in a significant broadening of confidence regions for Σm ν and other parameters. In the scenario where the total neutrino mass is dominated by the heaviest neutrino mass eigenstate, we obtain similar conclusions to those obtained in the degenerate neutrino mass scenario. In addition, the results show that the bounds on Σm ν based on two different neutrino mass hierarchies have insignificant differences in the spatially flat case for both the ΛCDM and ΦCDM models; however, the corresponding differences are larger in the non-flat case.

Research Organization:
Kansas State Univ., Manhattan, KS (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG03-99ER41093
OSTI ID:
1532968
Journal Information:
The Astrophysical Journal (Online), Vol. 829, Issue 2; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 54 works
Citation information provided by
Web of Science

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Cited By (25)

Observational constraints on the tilted flat-XCDM and the untilted nonflat XCDM dynamical dark energy inflation parameterizations journal May 2019
Measuring the Hubble constant and spatial curvature from supernova apparent magnitude, baryon acoustic oscillation, and Hubble parameter data journal August 2019
The background Friedmannian Hubble constant in relativistic inhomogeneous cosmology and the age of the Universe journal February 2017
Constraining cosmic curvature by using age of galaxies and gravitational lenses journal March 2017
Weighing neutrinos in the scenario of vacuum energy interacting with cold dark matter: application of the parameterized post-Friedmann approach journal May 2017
Exploring neutrino mass and mass hierarchy in the scenario of vacuum energy interacting with cold dark matter journal August 2018
Quasar X-ray and UV flux, baryon acoustic oscillation, and Hubble parameter measurement constraints on cosmological model parameters journal January 2020
Possible signals of vacuum dynamics in the Universe journal May 2018
First study of reionization in the Planck 2015 normalized closed ΛCDM inflation model journal July 2018
Constraints on dark energy dynamics and spatial curvature from Hubble parameter and baryon acoustic oscillation data journal July 2018
Baryon acoustic oscillation, Hubble parameter, and angular size measurement constraints on the Hubble constant, dark energy dynamics, and spatial curvature journal July 2019
Kinematic reconstructions of extended theories of gravity at small and intermediate redshifts journal January 2020
Determining the Hubble Constant from Hubble Parameter Measurements journal January 2017
Planck 2015 Constraints on the Non-flat ΛCDM Inflation Model journal August 2018
Planck 2015 Constraints on the Nonflat ϕ CDM Inflation Model journal October 2018
Model-independent Curvature Determination from Gravitational-wave Standard Sirens and Cosmic Chronometers journal November 2018
Planck 2015 Constraints on the Non-flat XCDM Inflation Model journal December 2018
Using the Tilted flat-ΛCDM and the Untilted Non-flat ΛCDM Inflation Models to Measure Cosmological Parameters from a Compilation of Observational Data journal September 2019
Probing the interaction between dark matter and dark energy in the presence of massive neutrinos text January 2016
Effects of neutrino mass hierarchies on dynamical dark energy models text January 2017
Possible signals of vacuum dynamics in the Universe text January 2017
Inflation in a closed universe text January 2017
Planck 2015 constraints on the non-flat XCDM inflation model text January 2017
Observational constraints on the tilted flat-XCDM and the untilted nonflat XCDM dynamical dark energy inflation parameterizations text January 2018
Quasar X-ray and UV flux, baryon acoustic oscillation, and Hubble parameter measurement constraints on cosmological model parameters text January 2019

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