Dark energy with rigid voids versus relativistic voids alone

TL;DR

This paper questions the necessity of dark energy by proposing a model where voids are treated as rigid Newtonian structures within a relativistic universe, challenging standard interpretations of cosmic flows.

Contribution

It introduces a novel perspective on void dynamics, suggesting that dark energy may be unnecessary if voids are modeled as rigid Newtonian entities within a relativistic framework.

Findings

Void dynamics can be explained without dark energy.

Rapid velocity flows out of voids may be interpreted differently.

The model challenges standard cosmological assumptions.

Abstract

The standard model of cosmology is dominated - at the present epoch - by dark energy. Its voids are rigid and Newtonian within a relativistic background. The model prevents them from becoming hyperbolic. Observations of rapid velocity flows out of voids are normally interpreted within the standard model that is rigid in comoving coordinates, instead of allowing the voids' density parameter to drop below critical and their curvature to become negative. Isn't it time to advance beyond nineteenth century physics and relegate dark energy back to the "no significant evidence" box?