Mapping the Integrated Sachs-Wolfe Effect.

Manzotti, A. ; Dodelson, S.

Technical Information Center Oak Ridge Tennessee

关键词: Cosmic microwave background radiation;    Photons;    Anisotropy;    Cosmology;    Decay;   

RP-ID  :  DE141156539

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

On large scales, the anisotropies in the cosmic microwave background (CMB) re ect not only the primordial field but also the energy gain when photons traverse decaying gravitational potentials 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.