Small temperature anisotropies in the Cosmic Microwave Background can be sourced by density perturbations via the late-time integrated Sachs-Wolfe 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 in a different footprint , and using a different super-structure finding strategy .
We identified 52 large voids and 102 superclusters at redshifts 0.2 < z < 0.65 .
We used the Jubilee simulation to a priori evaluate the optimal ISW measurement configuration for our compensated top-hat filtering technique , and then performed a stacking measurement of the CMB temperature field based on the DES data .
For optimal configurations , we detected a cumulative cold imprint of voids with \Delta T _ { f } \approx - 5.0 \pm 3.7 ~ { } \mu K and a hot imprint of superclusters \Delta T _ { f } \approx 5.1 \pm 3.2 ~ { } \mu K ; this is \sim 1.2 \sigma higher than the expected | \Delta T _ { f } | \approx 0.6 ~ { } \mu K imprint of such super-structures in \Lambda CDM .
If we instead use an a posteriori selected filter size ( R / R _ { v } = 0.6 ) , we can find a temperature decrement as large as \Delta T _ { f } \approx - 9.8 \pm 4.7 ~ { } \mu K for voids , which is \sim 2 \sigma above \Lambda CDM expectations and is comparable to previous measurements made using SDSS super-structure data .