Modulación de gran escala en procesos bariónicos en vacíos en expansión o contracción

RODRÍGUEZ MEDRANO, AGUSTÍN M.; DANTE J. PAZ; STASYSZYN, FEDERICO A.

Rosario

Congreso; 63 Reunion Anual de la Asociación Argentina de Astronomía; 2022

facultad de Ciencias Exactas, Ingeniería Agrimensura

Large sub-dense regions of the universe, called cosmic voids, are characterized for presenting properties different from the average of the Universe. In particular, we can differentiate the regions of voids in two populations due to their expansion or contraction dynamics. Under this dichotomy, the halos present inside and outside these regions, form and evolve in different ways. In this work, using simulations of cosmological voids with astrophysical models, we characterize the voids and their environment through the study of baryons. Our results indicate a smoother accretion of matter to the halos present in voids and those halos present in the outer regions of the overdense voids, feel disturbances due to massive halos.