Spatial correlation of Superstructures

SANTUCHO, M. V.

Workshop; The Friends-of-Friends Meeting; 2019

The cosmological evolution of the large-scale structure (LSS) has implications in the spatial distribution, frequency and properties of superstructures and the galaxies they contain. LSS structure is usually described by correlation statistics of halos and galaxies in both simulations and the observations. In this context, the 2-point correlation function is an essential and widely known tool to link spatial distribution of galaxies with cosmological parameters. However, this useful formalism is constrained to the assumption that the objects used to build it can be treated as punctual or symmetrical entities, such as voids. When the size of the involved systems are comparable to their mean separation, we can not directly calculate the 2-point correlation function. In this framework, we propose an alternative method, based on the formalism of the 2-point correlation function, that can be applied to measure clustering in extended and non-symmetrical systems. In particular, we examine Future Virialized Structures (FVS) in the MultiDark simulation and compare usual measures of LSS with this new measure of FVS spatial correlations.