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- W2102733168 abstract "Integrated Sachs-Wolfe (ISW) effect can be estimated by cross-correlating Cosmic Microwave Background (CMB) sky with tracers of the local matter distribution. At late cosmic time, the dark energy induced decay of gravitation potential generates a cross-correlation signal on large angular scales. The dominant noise are the intrinsic CMB anisotropies from the inflationary epoch. In this Letter we use CMB polarization to reduce this intrinsic noise. We cross-correlate the microwave sky observed by Wilkinson Microwave Anisotropy Probe (WMAP) with the radio source catalog compiled by NRAO VLA Sky Survey (NVSS) to study the efficiency of the noise suppression . We find that the error bars are reduced about 5-12 %, improving the statistical power." @default.
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- W2102733168 date "2011-03-02" @default.
- W2102733168 modified "2023-09-23" @default.
- W2102733168 title "Improved dark energy detection through the polarization-assisted cross correlation of the cosmic microwave background with radio sources" @default.
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- W2102733168 doi "https://doi.org/10.1103/physrevd.83.063001" @default.
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