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We examine the integrated Sachs-Wolfe (ISW) imprint of voids andsuperclusters on the cosmic microwave background. We first study results fromthe Jubilee $N$-body simulation. From Jubilee, we obtain the full-sky ISWsignal from structures out to redshift $z=1.4$ and a mock luminous red galaxy(LRG) catalogue. We confirm that the expected signal in the concordance \LambdaCDM model is very small and likely to always be much smaller than theanisotropies arising at the last scattering surface. Any current detections ofsuch an imprint must, therefore, predominantly arise from something other thanan ISW effect in a \Lambda CDM universe. Using the simulation as a guide, wethen look for the signal using a catalogue of voids and superclusters from theSloan Digital Sky Survey. We find a result that is consistent with the \LambdaCDM model, i.e. a signal consistent with zero.

The Jubilee ISW Project II: observed and simulated imprints of voids and superclusters on the cosmic microwave background