High redshift detection of the integrated Sachs-Wolfe effect

By Tommaso Giannantonio, Robert G. Crittenden, Robert Nichol, R. Scranton, Gordon Richards, Adam D. Myers, Robert J. Brunner, Alexander G. Gray, Andrew J. Connolly, D. Schneider. 2006

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We present evidence of a large angle correlation between the cosmic microwave background measured by WMAP and a catalog of photometrically detected quasars from the SDSS. The observed cross correlation is 0.30{+-}0.14 {mu}K at zero lag, with a shape consistent with that expected for correlations arising from the integrated Sachs-Wolfe effect. The photometric redshifts of the quasars are centered at z{approx}1.5, making this the deepest survey in which such a correlation has been observed. Assuming this correlation is due to the ISW effect, this constitutes the earliest evidence yet for dark energy and it can be used to constrain exotic dark energy models.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e24a25e40c0950d9c1b4b94c0009225b3695296d

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Citations in the corpus

Clustering Analyses of 300,000 Photometrically Classified Quasars. I. Luminosity and Redshift Evolution in Quasar Bias (2006, methodology): “…al. 2004; Myers et al. 2006), meaning that large quasar samples can be used to mea- sure angular quasar clustering as a function of physical properties (Myers et al. 2006), and to use angular quasar clustering to probe Dark Matter (Scranton et al. 2005) and Dark Energy (Giannantonio et al. 2006).”
Extragalactic Radio Sources and the WMAP Cold Spot (2007, background): “11 of Giannantonio et al. 2006), and the alignment and planarity of the quadrupole and the octopole (de Oliveira-Costa et al. 2004; Land & Magueijo 2005).”
THINK OUTSIDE THE COLOR BOX: PROBABILISTIC TARGET SELECTION AND THE SDSS-XDQSO QUASAR TARGETING CATALOG (2010, methodology): “The ≈95% efficient photometric UVX catalog of Richards et al. (2004) was used to measure the Integrated Sachs-Wolfe (ISW) effect (Giannantonio et al. 2006, 2008) and cosmic magnification bias (Scranton et al. 2005a), and to study the clustering of quasars on large (Myers et al. 2006, 2007a) and…”