Cosmic walls and filaments formation in modified Chaplygin gas cosmology

TL;DR

This paper investigates how small deviations from spherical symmetry in initial density perturbations within modified Chaplygin gas cosmology can lead to the formation of large-scale cosmic walls and filaments, aligning with observed cosmic structures.

Contribution

It demonstrates that minor initial asymmetries in perturbations can evolve into non-spherical structures, offering a potential explanation for cosmic walls and filaments in this cosmological model.

Findings

Small deviations from spherical symmetry lead to highly non-spherical structures.

Ellipsoidal perturbations can evolve into cosmic walls and filaments.

The model aligns with observed large-scale cosmic structures.

Abstract

We want to study the perturbation growth of an initial seed of an ellipsoidal shape in Top-Hat collapse model of structure formation in the Modified Chaplygin gas cosmology. Considering reasonable values of the constants and the parameters of the model under study, it is shown that a very small deviation from spherical symmetry (ellipsoidal geometry) in the initial seed leads to a final highly non-spherical structure which can be considered as a candidate for justifying already known cosmological structures as cosmic walls and filaments.