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Oxford University Press, Monthly Notices of the Royal Astronomical Society, 4(465), p. 4166-4179, 2016

DOI: 10.1093/mnras/stw2968

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Imprint of DES superstructures on the cosmic microwave background

Journal article published in 2016 by A. Kovács, C. Sánchez, J. García-Bellido, S. Nadathur, R. Crittenden, D. Gruen, D. Huterer, D. Bacon, J. Clampitt, J. DeRose, S. Dodelson, E. Gaztañaga, B. Jain, D. Kirk, O. Lahav and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Small temperature anisotropies in the cosmic microwave background (CMB) can be sourced by density perturbations via the late-time integrated Sachs-Wolfe (ISW) effect. Large voids and superclusters are excellent environments to make a localized measurement of this tiny imprint. In some cases excess signals have been reported. We probed these claims with an independent data set, using the first year data of the Dark Energy Survey (DES) in a different footprint, and using a different superstructure finding strategy. We identified 52 large voids and 102 superclusters at redshifts 0.2