Weak Lensing Analysis of Cosmic Voids using Simulated Data

CAPORASO, FRANCO; GONZALEZ, ELIZABETH JOHANA; GARCÍA LAMBAS, DIEGO R; RUIZ, ANDRÉS NICOLÁS

Congreso; Verão Quântico 2023,; 2023

Cosmic voids are the largest under-dense regions in the large-scale structure of the Universe and serve as a probe for studying its evolution and content. The interaction in their formation allows to constrain cosmological models. These underdensities are roughly spherical in mean and produce distortions in the light distribution of the galaxies that are behind, modifying their shapes. The strength of this distortions depends on the mass distribution within the void and can be used to trace the radial density distribution of these structures. In this work We present a lensing analysis of sub-samples of voids identified in the MICE-GC simulation. We apply weak-lensing stacking techniques to obtainthe radial projected density and contrast density profiles, using convergence and shear parameters. The obtained profiles were fitted using tridimensional density models.