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The cross-correlation of cosmic voids with the lensing convergence ($\kappa$)map of the CMB fluctuations offers a powerful tool to refine our understandingof the dark sector in the consensus cosmological model. Our principal aim is tocompare the lensing signature of our galaxy data set with simulations based onthe concordance model and characterize the results with an $A_{\kappa}$consistency parameter. In particular, our measurements contribute to theunderstanding of the "lensing-is-low" tension of the $\Lambda$CDM model. Weselected luminous red galaxies from the WISE-Pan-STARSS data set, allowing anextended 14,200 deg$^2$ sky area, that offers a more precise measurementcompared to previous studies. We created 2D and 3D void catalogs tocross-correlate their locations with the Planck lensing map and studied theiraverage imprint signal using a stacking methodology. Applying the sameprocedure, we also generated a mock catalog from the WebSky simulation forcomparison. The 2D void analysis revealed good agreement with the standardcosmological model with $A_{\kappa}\approx1.06 \pm 0.08$, i.e. $S/N=13.3$,showing a higher $S/N$ than previous studies using voids detected in the DarkEnergy Survey data set. The 3D void analysis exhibited a lower $S/N$ anddemonstrated worse agreement with our mock catalog than the 2D voids. Thesedeviations might be attributed to limitations in the mock catalog, such asimperfections in the LRG selection, as well as a potential asymmetry betweenthe North and South patches of the WISE-Pan-STARSS data set in terms of dataquality. Overall, we present a significant detection of a CMB lensing signalassociated with cosmic voids, largely consistent with the concordance model.Future analyses using even larger data sets also hold great promise of furthersharpening these results, given their complementary nature to large-scalestructure analyses.

The CMB lensing imprint of cosmic voids detected in the WISE-Pan-STARRS luminous red galaxy catalog