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arXiv · 1208.2350

Integrated Sachs-Wolfe map recovery from NVSS and WMAP 7yr data

R. B. Barreiro·P. Vielva·A. Marcos-Caballero·E. Martinez-Gonzalez
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Abstract

We present a map of the Cosmic Microwave Background (CMB) anisotropies induced by the late Integrated Sachs Wolfe effect. The map is constructed by combining the information of the WMAP 7-yr CMB data and the NRAO VLA Sky Survey (NVSS) through a linear filter. This combination improves the quality of the map that would be obtained using information only from the Large Scale Structure data. In order to apply the filter, a given cosmological model needs to be assumed. In particular, we consider the standard LCDM model. As a test of consistency, we show that the reconstructed map is in agreemet with the assumed model, which is also favoured against a scenario where no correlation between the CMB and NVSS catalogue is considered.

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R. B. Barreiro, P. Vielva, A. Marcos-Caballero, E. Martinez-Gonzalez. 2012-08-11. Integrated Sachs-Wolfe map recovery from NVSS and WMAP 7yr data. https://doi.org/10.1093/mnras/sts600

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