Presence of anisotropic pressures in Lema\^{i}tre-Tolman-Bondi cosmological models

TL;DR

This paper investigates Lemaître-Tolman-Bondi cosmological models with anisotropic pressures, constraining their parameters using recent supernova Ia observations to better understand their viability in explaining cosmic phenomena.

Contribution

It introduces anisotropic pressures into Lemaître-Tolman-Bondi models and constrains their parameters with observational data, a novel approach in this context.

Findings

Constraints on model parameters from supernova data

Evidence supporting anisotropic pressures in cosmological models

Potential implications for cosmic acceleration understanding

Abstract

We describe Lema\^{i}tre-Tolman-Bondi cosmological models where an anisotropic pressures is considered. By using recent astronomical observations coming from supernova of Ia types we constraint the values of the parameters that characterize our models.