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Integrated Sachs-Wolfe effect: Large scale structure correlation

Cooray, Asantha (2002) Integrated Sachs-Wolfe effect: Large scale structure correlation. Physical Review D, 65 (10). Art. No. 103510. ISSN 0556-2821.

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I discuss the correlation between the late-time integrated Sachs-Wolfe (ISW) effect in the cosmic microwave background (CMB) temperature anisotropies and the large scale structure of the local universe. This correlation has been proposed and studied in the literature as a probe of the dark energy and its physical properties. I consider a variety of large scale structure tracers suitable for a detection of the ISW effect via a cross correlation. In addition to luminous sources, I suggest the use of tracers such as dark matter halos or galaxy clusters. A suitable catalogue of mass selected halos for this purpose can be constructed with upcoming wide-field lensing and Sunyaev-Zel’dovich (SZ) effect surveys. With multifrequency data, the presence of the ISW-large scale structure correlation can also be investigated through a cross-correlation of the frequency cleaned SZ and CMB maps. While convergence maps constructed from lensing surveys of the large scale structure via galaxy ellipticities are less correlated with the ISW effect, lensing potentials that deflect CMB photons are strongly correlated and allow, probably, the best mechanism to study the ISW-large scale structure correlation with CMB data alone.

Item Type:Article
Additional Information:©2002 The American Physical Society. Received 17 December 2001; published 30 April 2002. This work was supported at Caltech by the Sherman Fairchild foundation and the DOE grant DE-FG03-92-ER40701.
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ID Code:10984
Deposited By: Archive Administrator
Deposited On:21 Jun 2008
Last Modified:26 Dec 2012 10:07

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