Dark energy stars: Stable configurations

TL;DR

This paper models stable, anisotropic dark energy stars using an analytic solution and compares their physical properties with observed compact objects, suggesting potential dark energy clustering.

Contribution

It introduces a new analytic model of dark energy stars with anisotropic matter, matching observed data and exploring dark energy clustering possibilities.

Findings

Mass-radius ratios align with observed compact stars.

Model satisfies energy conditions and stability criteria.

Surface redshift values are consistent with observations.

Abstract

In present paper a spherically symmetric stellar configuration has been analyzed by assuming the matter distribution of the stellar configuration is anisotropic in nature and compared with the realistic objects, namely, the low mass X-ray binaries (LMXBs) and X-ray pulsars. The analytic solution has been obtained by utilizing the dark energy equation of state for the interior solution corresponding to the Schwarzschild exterior vacuum solution at the junction interface. Several physical properties like energy conditions, stability, mass-radius ratio, and surface redshift are described through mathematical calculations as well as graphical plots. It is found that obtained mass-radius ration of the compact stars candidates like 4U 1820-30, PSR J 1614-2230, Vela X-1 and Cen X-3 are very much consistent with the observed data by Gangopadhyay et al. (Mon. Not. R. Astron. Soc. 431, 3216 (2013)). So our proposed model would be useful in the investigation of the possible clustering of dark energy.