Detection of the ISW effect and corresponding dark energy constraints

Abstract

Using a directional spherical wavelet analysis we detect the integrated Sachs-Wolfe (ISW) effect, indicated by a positive correlation between the Wilkinson Microwave Anisotropy Probe (WMAP) and NRAO VLA Sky Survey (NVSS) data, at the 3.9 sigma level. In a flat universe the detection of the ISW effect provides direct and independent evidence for dark energy. Moreover, we use our detection to constrain the dark energy density Omega_Lambda. We obtain estimates for Omega_Lambda consistent with other analysis techniques and data sets and rule out a zero cosmological constant at greater than 99% significance.

4 pages, 3 figures, Proceedings of XLIst Rencontres de Moriond

References in corpus (4)

• Cosmology and the Fate of Dilatation Symmetry
• Detection of the ISW and SZ effects from the CMB-Galaxy correlation
• Constraining dark energy with cross-correlated CMB and Large Scale Structure data
• Global universe anisotropy probed by the alignment of structures in the cosmic microwave background

Cited by in corpus (31)

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• Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications
• Correlation of CMB with large-scale structure: II. Weak lensing
• Spherical Needlets for CMB Data Analysis
• Extragalactic Radio Sources and the WMAP Cold Spot
• The significance of the integrated Sachs-Wolfe effect revisited
• Dynamics of Interacting Quintessence Models: Observational Constraints
• The CMB cold spot: texture, cluster or void?
• Local Void vs Dark Energy: Confrontation with WMAP and Type Ia Supernovae
• Cross-correlation of 2MASS and WMAP3: Implications for the Integrated Sachs-Wolfe effect
• A reassessment of the evidence of the Integrated Sachs-Wolfe effect through the WMAP-NVSS correlation
• Needlet Detection of Features in WMAP CMB Sky and the Impact on Anisotropies and Hemispherical Asymmetries
• A Map of the Integrated Sachs-Wolfe Signal from Luminous Red Galaxies
• Probing dark energy with steerable wavelets through correlation of WMAP and NVSS local morphological measures
• Integrated Sachs Wolfe Effect and Rees Sciama Effect
• The Integrated Sachs-Wolfe Effect in Interacting Dark Energy Models
• Subsampling needlet coefficients on the sphere
• Optimising large galaxy surveys for ISW detection
• A new perspective on the relation between dark energy perturbations and the late-time ISW effect
• Evolution in the bias of faint radio sources to z ~ 2.2
• The Integrated Sachs Wolfe effect: unWISE and Planck constraints on Dynamical Dark Energy
• Modified GBIG Scenario as an Alternative for Dark Energy
• Constraining neutrino masses with the ISW-galaxy correlation function
• The Cold Spot as a Large Void: Rees-Sciama effect on CMB Power Spectrum and Bispectrum
• Optimal ISW detection and joint likelihood for cosmological parameter estimation
• A linear filter to reconstruct the ISW effect from CMB and LSS observations
• Constraints on Dark Energy Parameters from Correlations of CMB with LSS
• Spin Needlets for Cosmic Microwave Background Polarization Data Analysis
• Ray tracing the integrated Sachs-Wolfe effect through the light cones of the Dark Energy Universe Simulation -- Full Universe Runs
• Full sky Integrated Sachs-Wolfe maps for the MICE Grand Challenge lightcone simulation