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Area of Science:

  • Astrophysics
  • Cosmology
  • Gravitational Wave Astronomy

Background:

  • Dark matter remains one of the biggest mysteries in cosmology.
  • Neutron stars are extreme astrophysical objects offering unique environments to probe fundamental physics.
  • Compact Dark Objects (CDOs) are a proposed dark matter candidate.

Purpose of the Study:

  • To investigate the potential of Compact Dark Objects (CDOs) as a dark matter candidate.
  • To determine if CDOs oscillating within neutron stars can produce detectable gravitational waves (GWs).
  • To establish the frequency range and amplitude of GWs emitted by oscillating CDOs.

Main Methods:

  • Simulating the dynamics of CDOs within neutron star interiors.
  • Calculating the resulting gravitational wave emission from CDO oscillations.
  • Analyzing the detectability of these GWs with current and future gravitational wave observatories like LIGO.

Main Results:

  • The oscillation of CDOs inside neutron stars generates gravitational waves (GWs).
  • The frequency of these GWs is typically in the 3-5 kHz range, determined by the neutron star's central density.
  • The GW strain amplitude is dependent on the mass of the CDO.

Conclusions:

  • CDO oscillations within neutron stars represent a novel and potentially detectable source of gravitational waves.
  • LIGO may be sensitive to CDO masses of 10^-8 solar masses or greater under optimal conditions.
  • This research provides a new observational window for detecting dark matter candidates.