Radial Oscillations of Quark Stars Admixed with Dark Matter

We investigated compact stars consisting of cold quark matter and fermionic dark matter treated as two admixed fluids. We computed the stellar structures and fundamental radial oscillation frequencies of different masses of the dark fermion in the cases of weak and strong self-interacting dark matter. We found that the fundamental frequency can be dramatically modified and, in some cases, stable dark strange planets and dark strangelets with very low masses and radii can be formed.

Automated summary

This study investigates compact stars composed of cold quark matter and fermionic dark matter, treated as two mixed fluids. The stellar structures and fundamental radial oscillation frequencies are calculated for different masses of the dark fermion under weak and strong self-interacting dark matter scenarios. It is found that the fundamental frequency can be significantly modified, leading to the formation of stable dark strange planets and dark strangelets with very low masses and radii.