English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/110607
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 119 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Planck 2013 results. XIX. The integrated Sachs-Wolfe effect

Autor Vielva, P. ; Barreiro, R. Belén ; Bonavera, Laura ; Curto, Andrés ; Diego, José María ; Fosalba, Pablo ; González-Nuevo, J. ; Herranz, D. ; López-Caniego, M. ; Marcos-Caballero, A. ; Martínez-González, Enrique ; Rebolo López, Rafael; Toffolatti, L. ; Planck Collaboration
Palabras clave Dark energy
Large-scale structure of Universe
Cosmic background radiation
Galaxies: clusters: general
Methods: data analysis
Fecha de publicación 2014
EditorEDP Sciences
Citación Astronomy and Astrophysics 571: A19 (2014)
ResumenBased on cosmic microwave background (CMB) maps from the 2013 Planck Mission data release, this paper presents the detection of the integrated Sachs-Wolfe (ISW) effect, that is, the correlation between the CMB and large-scale evolving gravitational potentials. The significance of detection ranges from 2 to 4σ, depending on which method is used. We investigated three separate approaches, which essentially cover all previous studies, and also break new ground. (i) We correlated the CMB with the Planck reconstructed gravitational lensing potential (for the first time). This detection was made using the lensing-induced bispectrum between the low-â.,> and high-â.,> temperature anisotropies; the correlation between lensing and the ISW effect has a significance close to 2.5σ. (ii) We cross-correlated with tracers of large-scale structure, which yielded a significance of about 3σ, based on a combination of radio (NVSS) and optical (SDSS) data. (iii) We used aperture photometry on stacked CMB fields at the locations of known large-scale structures, which yielded and confirms a 4σ signal, over a broader spectral range, when using a previously explored catalogue, but shows strong discrepancies in amplitude and scale when compared with expectations. More recent catalogues give more moderate results that range from negligible to 2.5σ at most, but have a more consistent scale and amplitude, the latter being still slightly higher than what is expected from numerical simulations within ΛCMD. Where they can be compared, these measurements are compatible with previous work using data from WMAP, where these scales have been mapped to the limits of cosmic variance. Planck's broader frequency coverage allows for better foreground cleaning and confirms that the signal is achromatic, which makes it preferable for ISW detection. As a final step we used tracers of large-scale structure to filter the CMB data, from which we present maps of the ISW temperature perturbation. These results provide complementary and independent evidence for the existence of a dark energy component that governs the currently accelerated expansion of the Universe.
Versión del editorhttp://dx.doi.org/10.1051/0004-6361/201321526
URI http://hdl.handle.net/10261/110607
DOI10.1051/0004-6361/201321526
Identificadoresdoi: 10.1051/0004-6361/201321526
issn: 0004-637X
e-issn: 1432-0746
Aparece en las colecciones: (ICE) Artículos
(IFCA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
XIX. The integrated Sachs-Wolfe.pdf6,63 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.