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

Understand

We examine the integrated Sachs-Wolfe (ISW) imprint of voids and superclusters on the cosmic microwave background.

• We first study results from the Jubilee $N$-body simulation.
• From Jubilee, we obtain the full-sky ISW signal 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 \Lambda CDM model is very small and likely to always be much smaller than the anisotropies arising at the last scattering surface.