The Formulation of Scaling Expansion in an Euler-Poisson Dark-fluid Model
Abstract
We present a dark fluid model described as a non-viscous, non-relativistic, rotating, and self-gravitating fluid. We assumed that the system has spherical symmetry and the matter can be described with the polytropic equation of state. The induced coupled non-linear partial differential equation system was solved by using a self-similar time-dependent ansatz introduced by L. Sedov and G. I. Taylor. These kinds of solutions were successfully used to describe blast waves induced by an explosion since the Guderley-Landau-Stanyukovich problem. We showed that these kinds of solutions can provide new solutions that are consistent with the Newtonian cosmological framework. We have found that such solutions can be applied to describe normal-to-dark energy on the cosmological scale.
Keywords
Cite
@article{arxiv.2303.03792,
title = {The Formulation of Scaling Expansion in an Euler-Poisson Dark-fluid Model},
author = {Balázs Endre Szigeti and Imre Ferenc Barna and Gergely Gábor Barnaföldi},
journal= {arXiv preprint arXiv:2303.03792},
year = {2026}
}
Comments
16 page, 8 figures