Compact Stars Sourced by Perfect Fluid Dark Matter Halos
General Relativity and Quantum Cosmology
2026-01-30 v1 High Energy Astrophysical Phenomena
High Energy Physics - Theory
Abstract
Recent studies have shown that dark matter halos can support regular black holes or compact stars by assuming an anisotropic energy-momentum tensor. In this paper, we extend the analysis to the dark matter halo as an isotropic perfect fluid. By employing galactic dark matter profiles-specifically the Einasto and Dehnen models-as the mass-energy density source, we numerically solve the Einstein field equations and find a class of non-singular, horizonless compact star solutions. Moreover, these configurations remain stable against axial perturbations while satisfying the dominant energy condition.
Cite
@article{arxiv.2601.21848,
title = {Compact Stars Sourced by Perfect Fluid Dark Matter Halos},
author = {Yuan Yue and Yong-Qiang Wang},
journal= {arXiv preprint arXiv:2601.21848},
year = {2026}
}
Comments
12 pages, 4 figures