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

AuthorsBarreiro, R. Belén ; Vielva, P. ; Marcos-Caballero, A. ; Martínez-González, Enrique
KeywordsMethods: statistical
Cosmology: observations
Cosmic background radiation
Large-scale structure of Universe
Methods: data analysis
Issue Date2013
PublisherOxford University Press
Royal Astronomical Society
CitationMonthly Notices of the Royal Astronomical Society 430(1): 259-263 (2013)
AbstractWe 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 Wilkinson Microwave Anisotropy Probe 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 Λ cold dark matter model. As a test of consistency, we show that the reconstructed map is in agreement with the assumed model, which is also favoured against a scenario where no correlation between the CMB and NVSS catalogue is considered. © 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
Publisher version (URL)http://dx.doi.org/10.1093/mnras/sts600
Identifiersdoi: 10.1093/mnras/sts600
issn: 0035-8711
e-issn: 1365-2966
Appears in Collections:(IFCA) Artículos
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