Singularity formation in radiating star with dark energy background

TL;DR

This paper investigates how dark energy influences the gravitational collapse of radiating stars, revealing its significant role in determining whether a black hole or naked singularity forms.

Contribution

It introduces a detailed analysis of dark energy's impact on singularity formation during stellar collapse, considering both isolated and interacting scenarios.

Findings

Dark energy affects the end state of stellar collapse.

Collapse can result in black holes or naked singularities depending on conditions.

Dark energy's role is crucial in the formation process.

Abstract

In this paper, we considered the gravitational collapse of a symmetric radiating star consisting of perfect fluid (baryonic) in the background of dark energy (DE) with general equation of state. The effect of DE on the singularity formation has been discussed first separately (only DE present) and then combination of both baryonic and DE interaction. We have also showed that DE components play important role in the formation of Black-Hole(BH). In some cases the collapse of radiating star leads to black hole formation and in other cases it forms Naked-Singularity(or, eternally collapse). The present work is in itself remarkable to describe the effect of dark energy on singularity formation in radiating star.