Slowly rotating dark energy stars

TL;DR

This paper investigates the properties of slowly rotating dark energy stars using the extended Chaplygin equation-of-state, analyzing their moment of inertia and metric components for different masses and rotation states.

Contribution

It provides a detailed analysis of the moment of inertia and metric solutions for slowly rotating dark energy stars, extending understanding of their rotational characteristics.

Findings

Moment of inertia increases with star mass

Non-rotating stars have a faster-growing moment of inertia

Rotating stars' moment of inertia curve lies below non-rotating stars' curve

Abstract

We study isotropic and slowly-rotating stars made of dark energy adopting the extended Chaplygin equation-of-state. We compute the moment of inertia as a function of the mass of the stars, both for rotating and non-rotating objects. The solution for the non-diagonal metric component as a function of the radial coordinate for three different star masses is shown as well. We find that i) the moment of inertia increases with the mass of the star, ii) in the case of non-rotating objects the moment of inertia grows faster, and iii) the curve corresponding to rotation lies below the one corresponding to non-rotating stars.