Mapping the Integrated Sachs-Wolfe Effect
arXiv:1407.5623 · doi:10.1103/PhysRevD.90.123009
Abstract
On large scales, the anisotropies in the cosmic microwave background (CMB) reflect not only the primordial field but also the energy gain when photons traverse decaying gravitational potentials of large scales structure, the Integrated Sachs-Wolfe (ISW) effect. Decomposing the anisotropy signal into a primordial piece and an ISW component is more urgent than ever as cosmologists strive to understand the Universe on the largest of scales. Here we present a likelihood technique for extracting the ISW signal from measurements of the CMB, the distribution of galaxies, and maps of gravitational lensing. We test this technique first to simulated data and then we apply it to the combination of temperature anisotropies, the lensing map made by the Planck satellite, and the NVSS galaxy survey. We also show projections for upcoming surveys.
10 pages, 9 figures
References in corpus (13)
- Correlation of CMB with large-scale structure: I. ISW Tomography and Cosmological Implications
- Hemispherical power asymmetry in the three-year Wilkinson Microwave Anisotropy Probe sky maps
- Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications
- Detection of the ISW and SZ effects from the CMB-Galaxy correlation
- Integrated Sachs-Wolfe effect from the cross correlation of WMAP3 year and the NRAO VLA sky survey data: New results and constraints on dark energy
- The significance of the integrated Sachs-Wolfe effect revisited
- A reassessment of the evidence of the Integrated Sachs-Wolfe effect through the WMAP-NVSS correlation
- A Combined EIS-NVSS Survey Of Radio Sources (CENSORS) III: Spectroscopic observations
- A Map of the Integrated Sachs-Wolfe Signal from Luminous Red Galaxies
- The High Redshift Integrated Sachs-Wolfe Effect
- Probing dark energy with steerable wavelets through correlation of WMAP and NVSS local morphological measures
- Optimal ISW detection and joint likelihood for cosmological parameter estimation
- A linear filter to reconstruct the ISW effect from CMB and LSS observations