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Spherically symmetric collapsing star with the background of dark energy
International Journal of Geometric Methods in Modern Physics ( IF 2.1 ) Pub Date : 2022-06-28 , DOI: 10.1142/s0219887822501481
Grishma Verma 1 , Rajesh Kumar 1 , K. R. Mishra 1
Affiliation  

In this work, we studied the gravitational collapse of a spherically symmetric radiating star consisting of perfect fluid (baryonic) in the background of dark energy (DE) with an equation of state pDE=ωρDE. The effect of DE on the singularity formation has been discussed in two separate cases: first when only DE is present, and the other, with a combination of both baryonic and DE interaction. We have shown that DE component pDE plays an important role in the formation of black hole (BH). In some cases, the collapse of radiating stars leads to BH formation, and in other cases, it forms naked-singularity (or, eternally collapse). This study is in itself a significant work to describe the effect of DE on singularity formation in radiating stars.



中文翻译:

暗能量背景下的球对称坍缩星

在这项工作中,我们研究了在暗能量(DE)背景下由完美流体(重子)组成的球对称辐射星的引力坍缩,并具有状态方程p=ωρ. DE 对奇点形成的影响已在两种不同的情况下进行了讨论:第一种是仅存在 DE,另一种是重子和 DE 相互作用的组合。我们已经证明了 DE 组件p在黑洞(BH)的形成中起重要作用。在某些情况下,辐射恒星的坍缩会导致 BH 的形成,而在其他情况下,它会形成裸奇点(或永远坍缩)。这项研究本身就是描述 DE 对辐射恒星奇点形成影响的一项重要工作。

更新日期:2022-06-28
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