For anisotropic quark stars in full general relativity, f-mode frequency scales linearly with the square root of average density, and normalized damping time follows a linear trend with compactness, with anisotropy shifting both relations.
Discrimination of Quark Stars from Neutron Stars in Quadrupole Oscillations
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abstract
The frequencies and damping times due to gravitational radiation are calculated for self-bound quark star models. The results are compared with those for neutron star models. They are markedly contrasted in less relativistic cases. The distinction derived here from a simple model of quark stars may be relevant to the future theoretical and observational studies, since the oscillation properties essentially depend on the mass and radius of an equilibrium star.
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Quasi-normal f-modes of anisotropic quark stars in full general relativity
For anisotropic quark stars in full general relativity, f-mode frequency scales linearly with the square root of average density, and normalized damping time follows a linear trend with compactness, with anisotropy shifting both relations.