Dark Energy Survey Year 1 Results: the lensing imprint of cosmic voids
  on the Cosmic Microwave Background
  Cosmic voids gravitationally lens the cosmic microwave background (CMB)
radiation, resulting in a distinct imprint on degree scales. We use the
simulated CMB lensing convergence map from the MICE N-body simulation to
calibrate our detection strategy for a given void definition and galaxy tracer
density. We then identify cosmic voids in DES Year 1 data and stack the Planck
2015 lensing convergence map on their locations, probing the consistency of
simulated and observed void lensing signals. When fixing the shape of the
stacked convergence profile to that calibrated from simulations, we find
imprints at the $3{\sigma}$ significance level for various analysis choices.
The best measurement strategies based on the MICE calibration process yield
$S/N \sim 4$ for DES Y1, and the best-fit amplitude recovered from the data is
consistent with expectations from MICE ($A \sim 1$). Given these results as
well as the agreement between them and N-body simulations, we conclude that the
previously reported excess integrated Sachs-Wolfe (ISW) signal associated with
cosmic voids in DES Y1 has no counterpart in the Planck CMB lensing map.
