Compact Dark Objects in Neutron Star Mergers
arXiv:2012.11908 · doi:10.1103/PhysRevD.107.083002
Abstract
We estimate the long-lasting gravitational wave (GW) emission of compact dark objects following a binary neutron-star (NS) merger. We consider compact dark objects, which initially reside in the centers of NSs and which may consist of self-interacting dark matter (DM). By approximating the compact dark objects as test particles, we model the merging of NS binaries hosting DM components with three-dimensional relativistic simulations. Our simulation results suggest that the DM components remain gravitationally bound and orbit inside the merger remnant with orbital separations of typically a few km. The subsequent orbital motion of the DM components generates a GW signal with frequencies in the range of a few kHz. When considering a range of different binary masses and high-density equations of state (EoS), we find that the GW frequency of the orbiting DM components scales with the compactness of NSs. Similarly, we find relations between the DM GW frequency and the dominant postmerger GW frequency of the stellar fluid or the tidal deformability, which quantifies EoS effects during the binary inspiral. Hence, a measurement of these quantities can be used to specify the frequency range of the GW emission by DM. Under the assumption that GW back reaction is the only relevant dissipative process, the GW signal may last between seconds and years depending on the mass of the DM component. We estimate the detectability of the GW signals and find that DM components in NS mergers may only be detectable with existing and projected GW instruments if the dark objects are as massive as about 0.01 to 0.1 M_sun. We emphasize that the GW emission is limited by the lifetime of the remnant. A forming black hole will immediately swallow the DM objects because their orbits are smaller than the innermost stable circular orbit of the black hole.
arXiv comment17 pages, 17 figures, accepted for publication in Phys. Rev. D
References in corpus (76)
- A Massive Pulsar in a Compact Relativistic Binary
- Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
- Properties of the binary neutron star merger GW170817
- Tidal deformability of neutron stars with realistic equations of state and their gravitational wave signatures in binary inspiral
- Testing the nature of dark compact objects: a status report
- Composition and thermodynamics of nuclear matter with light clusters
- Core-collapse supernova equations of state based on neutron star observations
- Statistical Model for a Complete Supernova Equation of State
- Direct Detection of WIMP Dark Matter: Concepts and Status
- Measuring neutron-star properties via gravitational waves from binary mergers
- WIMP Annihilation and Cooling of Neutron Stars
- Relativistic Numerical Method for Close Neutron Star Binaries
- A review of indirect searches for particle dark matter
- Review of LHC Dark Matter Searches
- Neutron Stars as Dark Matter Probes
- Neutron star tidal deformability and equation of state constraints
- Relativistic neutron star merger simulations with non-zero temperature equations of state I. Variation of binary parameters and equation of state
- Equation-of-state dependence of the gravitational-wave signal from the ring-down phase of neutron-star mergers
- Current status of direct dark matter detection experiments
- Constraining Asymmetric Dark Matter through observations of compact stars
- Constraints on Scalar Asymmetric Dark Matter from Black Hole Formation in Neutron Stars
- Dark Kinetic Heating of Neutron Stars and An Infrared Window On WIMPs, SIMPs, and Pure Higgsinos
- Dark Matter Searches at Colliders
- Dark Matter Effects On Neutron Star Properties
- Relativistic model for nuclear matter and atomic nuclei with momentum-dependent self-energies
- A Xylophone Configuration for a third Generation Gravitational Wave Detector
- Exploring properties of high-density matter through remnants of neutron-star mergers
- Bosonic Dark Matter in Neutron Stars and its Effect on Gravitational Wave Signal
- Dark halos around neutron stars and gravitational waves
- Conformally Flat Smoothed Particle Hydrodynamics: Application to Neutron Star Mergers
- Neutron stars at the dark matter direct detection frontier
- Dark Matter Thermalization in Neutron Stars
- Neutron stars exclude light dark baryons
- Asymmetric Dark Stars and Neutron Star Stability
- On the capture of dark matter by neutron stars
- Heating up Neutron Stars with Inelastic Dark Matter
- Improved Treatment of Dark Matter Capture in Neutron Stars
- New Analysis of Neutron Star Constraints on Asymmetric Dark Matter
- New class of hybrid EoS and Bayesian M-R data analysis
- Effects of dark matter on the nuclear and neutron star matter
- Search for Dark Matter Effects on Gravitational Signals from Neutron Star Mergers
- Neutron stars: new constraints on asymmetric dark matter
- Limits on Self-Interacting Dark Matter
- Bounds on self-interacting fermion dark matter from observations of old neutron stars
- Search for dark matter at colliders
- Making Asymmetric Dark Matter Gold: Early Universe Synthesis of Nuggets
- A gravitational wave afterglow in binary neutron star mergers
- Warming Nuclear Pasta with Dark Matter: Kinetic and Annihilation Heating of Neutron Star Crusts
- Nuclear Structure of Bound States of Asymmetric Dark Matter
- Dark matter capture in celestial objects: light mediators, self-interactions, and complementarity with direct detection
- Dark Kinetic Heating of Neutron Stars from Contact Interactions with Relativistic Targets
- Confronting nuclear equation of state in the presence of dark matter using GW170817 observation in relativistic mean field theory approach
- Status, Challenges and Directions in Indirect Dark Matter Searches
- Systematics of prompt black-hole formation in neutron star mergers
- Improved Treatment of Dark Matter Capture in Neutron Stars II: Leptonic Targets
- Dark matter admixed neutron star properties in the light of X-ray pulse profile observations
- The Second Love Number of Dark Compact Planets and Neutron Stars with Dark Matter
- Tidal Deformability of Dark Matter Admixed Neutron Stars
- Dark decay of the neutron
- Astrophysical Signatures of Asymmetric Dark Matter Bound States
- Gravitational wave signatures of dark matter cores in binary neutron star mergers by using numerical simulations
- Reheating neutron stars with the annihilation of self-interacting dark matter
- Smoothed Particle Hydrodynamics Simulations of Ultra-Relativistic Shocks with Artificial Viscosity
- Spectral classification of gravitational-wave emission and equation of state constraints in binary neutron star mergers
- Detecting Dark Matter with Neutron Star Spectroscopy
- GW170817 constraints on the properties of a neutron star in the presence of WIMP dark matter
- Gravitational Waves from Compact Dark Objects in Neutron Stars
- Hidden-Sector Modifications to Gravitational Waves From Binary Inspirals
- Cuckoo's Eggs in Neutron Stars: Can LIGO Hear Chirps from the Dark Sector?
- Neutron Star Stability in Light of the Neutron Decay Anomaly
- Exotic Compact Objects with Two Dark Matter Fluids
- Heating neutron stars with GeV dark matter
- GW170817 and GW190425 as Hybrid Stars of Dark and Nuclear Matters
- A New Probe of Dark Matter-Induced Fifth Force with Neutron Star Inspirals
- Analysis on the black hole formations inside old neutron stars by isospin-violating dark matter with self-interaction
- Exploring dark sector parameters in light of neutron star temperatures
Cited by in corpus (22)
- The Science of the Einstein Telescope
- Bosonic Dark Matter in Light of the NICER Precise Mass-Radius Measurements
- The effects of self-interacting bosonic dark matter on neutron star properties
- Tidal Deformability of Fermion-Boson Stars: Neutron Stars Admixed with Ultra-Light Dark Matter
- Comprehensive study of compact stars with dark matter
- Inflationary Attractors Predictions for Static Neutron Stars in the Mass-Gap Region
- Exploring the distribution and impact of bosonic dark matter in neutron stars
- Effects of Dark Matter on -mode oscillations of Neutron Stars
- Dark matter effects on the properties of neutron stars: compactness and tidal deformability
- Quasi-equilibrium configurations of binary systems of dark matter admixed neutron stars
- Searching for New Physics in Ultradense Environment: a Review on Dark Matter Admixed Neutron Stars
- The impact of asymmetric dark matter on the thermal evolution of nucleonic and hyperonic compact stars
- Generating ultra compact boson stars with modified scalar potentials
- Probing fermionic asymmetric dark matter cores using global neutron star properties
- Supramassive dark objects with neutron star origin
- Rapidly spinning dark matter-admixed neutron stars
- Thermodynamic Consistent Description of Compact Stars of Two Interacting Fluids: The Case of Neutron Stars with Higgs Portal Dark Matter
- Tidal Deformability as a Probe of Dark Matter in Neutron Stars
- The Impact of Dark Matter on Gravitational Wave Detection by Space-based Interferometers
- -mode oscillations of dark matter admixed neutron stars
- Neutron Star with Dark Matter Admixture: A Candidate for Bridging the Mass Gap
- Strongly Interacting Dark Matter admixed Neutron Stars