Radial Oscillations of Dark Matter admixed Neutron Stars

Abstract

Within the relativistic mean-field model, we investigate the properties of dark matter (DM) admixed neutron stars, considering non-rotating objects made of isotropic matter. We adopt the IOPB-I hadronic equation of state (EOS) by assuming that the fermionic DM within super-symmetric models has already been accreted inside the neutron star (NS). The impact of DM on the mass-radius relationships and the radial oscillations of pulsating DM admixed neutron stars (with and without the crust) are explored. It is observed that the presence of DM softens the EOS, which in turn lowers the maximum mass and its corresponding radius. Moreover, adding DM results in higher frequencies of pulsating objects and hence we show the linearity of fundamental mode frequency of canonical NS with DM Fermi momentum. We also investigate the profile of eigenfunctions solving the Sturm-Liouville boundary value problem, and verify its validity. Further, we study the stability of NSs considering the fundamental mode frequency variation with the mass of the star, and verify the stability criterion $\partial M/\partial {\rho }_c>0$. Finally, the effect of the crust on the large frequency separation for different DM Fermi momenta is shown as well.

Published in Phys. Rev. D 107, 103039 (2023)

References in corpus (15)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Results from a search for dark matter in the complete LUX exposure
• Dark Matter Results from First 98.7-day Data of PandaX-II Experiment
• GW170817: Joint Constraint on the Neutron Star Equation of State from Multimessenger Observations
• Neutron-star radius constraints from GW170817 and future detections
• WIMP Annihilation and Cooling of Neutron Stars
• Constraining Asymmetric Dark Matter through observations of compact stars
• The dark matter effect on realistic equation of state in neutron stars
• Dark matter admixed neutron star as a possible compact component in the GW190814 merger event
• Gravitational Waves from Nonlinear Couplings of Radial and Polar Nonradial Modes in Relativistic Stars
• Gravitational waves from f-modes excited by the inspiral of highly eccentric neutron star binaries
• Effects of dark matter on the in-spiral properties of the binary neutron stars
• The equation of state and radial oscillations of neutron stars
• Simulating cosmologies beyond $\Lambda$CDM with PINOCCHIO
• Oscillation Modes and Gravitational Waves from Strangeon Stars

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