Soliton in Gravitating Gas. Hoag's Object

TL;DR

This paper investigates the theoretical existence of solitons in gravitating gas and proposes a toroidal soliton as a potential explanation for Hoag's object galaxy.

Contribution

It demonstrates that localized static solutions are possible in gravitating gas and suggests a novel astrophysical application to explain Hoag's object.

Findings

Virial arguments do not prevent static soliton solutions.

A toroidal soliton could explain Hoag's object.

Theoretical foundation for solitons in gravitating systems.

Abstract

We explore the possibility of creating of solitons in gravitating gas. It is shown that the virial arguments does not put an obstacle for the existence of localized static solutions. The simplest toroidal soliton of gravitating gas could be the explanation of the peculiar galaxy named Hoag's object.