-mode oscillations of dark matter admixed quarkyonic neutron star
arXiv:2412.06739 · doi:10.1088/1475-7516/2025/08/003
Abstract
We systematically investigate mode oscillations ( = 2) in quarkyonic neutron stars with dark matter, employing the Cowling approximation within the framework of linearized general relativity. The relativistic mean-field approach is used to compute various macroscopic properties of neutron stars. The analysis focuses on three key free parameters in the model: transition density, QCD confinement scale, and dark matter (DM) Fermi momentum, all of which significantly affect the properties of mode oscillations. The inclusion of dark matter in quarkyonic equations of state leads to notable variations in mode frequencies. Despite these changes, several universal relations among the oscillation properties are found to hold, demonstrating their robustness in the presence of dark matter.
11 pages, 8 figures
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