Integrated Sachs-Wolfe effect map recovery from NVSS and WMAP 7-yr data
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 Wilkinson Microwave Anisotropy Probe 7-yr CMB data and the NRAO VLA Sky Survey (NVSS) through a linear filter. This com...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/109189 |
| Acceso en línea: | http://hdl.handle.net/10261/109189 |
| Access Level: | acceso abierto |
| Palabra clave: | Methods: statistical Cosmology: observations Cosmic background radiation Large-scale structure of the universe Methods: data analysis |
| Sumario: | 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 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. |
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