Observing dark energy dynamics with supernova, microwave background, and galaxy clustering

2005/11/30 by Jun‐Qing Xia, Jun-Qing Xia, Gong‐Bo Zhao +4 · 7 citations
Physics and Astronomy · #Astrophysics #CMB cold spot #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Energy (signal processing) #Equation of state #Galaxies: Formation, Evolution, Phenomena #Galaxy #Physics #Quantum mechanics #Supernova #astro-ph #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.73.063521

published as Phys.Rev.D73:063521,2006 · 6 pages, 6 figuers, 1 table, double columns Updated version in submission to PRD

arxiv created 2005/12/15 · openalex publication_date 2006/03/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Observing dark energy dynamics is the most important aspect of the current dark energy research. In this paper we perform a global analysis of the constraints on the property of dark energy from the current observations. We pay particular attention to the effects of dark energy perturbations. Using the data from SNIa (157 gold sample), WMAP, and SDSS we find that the best fitting dark energy model is given by the dynamical model with the equation of state crossing \ensuremath-1. Nevertheless the standard \ensuremathΛCDM model is still a good fit to the current data and evidence for dynamics is currently not very strong. We also consider the constraints with the recent released SNIa data from Supernova Legacy Survey.

Citations

• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Cosmology with a time-variable cosmological 'constant'
• Quantum effects can renderw<−1on cosmological scales
• Transition of the dark energy equation of state in an interacting holographic dark energy model
• Cosmological evolution of a quintom model of dark energy
• Oscillating quintom and the recurrent universe
• The Essence of Quintessence and the Cost of Compression
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results
• Big Bang Nucleosynthesis Predictions for Precision Cosmology
• A single scalar field model of dark energy with equation of state crossing −1
• Cosmological parameter analysis including SDSS Lyαforest and galaxy bias: Constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
• Final Results from theHubble Space TelescopeKey Project to Measure the Hubble Constant
• Accelerating Universes with Scaling Dark Matter
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Foundations of observing dark energy dynamics with the Wilkinson Microwave Anisotropy Probe
• Cosmological consequences of a rolling homogeneous scalar field
• Kinetically driven quintessence
• Crossing the phantom divide: Dark energy internal degrees of freedom

Cited by

• DUALITY INVARIANCE AND COSMOLOGICAL DYNAMICS
• Hubble expansion and structure formation in time varying vacuum models
• Scalar–tensor models of normal and phantom dark energy
• Brane world cosmology in the sourced-Taub background
• Constraints on dark energy parameters from correlations of CMB with LSS
• Late acceleration andw=−1crossing in induced gravity
• Effect on Cosmic Microwave Background Polarization of Coupling of Quintessence to Pseudoscalar Formed from the Electromagnetic Field and its Dual