Gravitational wave asteroseismology of accreting neutron stars in a steady state
arXiv:2410.01552 · doi:10.1103/PhysRevD.110.083036
Abstract
An accreting neutron star is potentially the gravitational wave source. In this study, we examine the gravitational wave frequencies from such an object in the steady state, adopting the Cowling approximation. We can derive the empirical relations independently of the mass accretion rate for the frequencies of the fundamental and 1st pressure modes multiplied by the stellar mass as a function of the stellar compactness, together with those for the 1st and 2nd gravity mode frequencies. So, once one simultaneously observes the fundamental (or 1st pressure) and gravity mode frequencies, one could constrain the neutron star mass and radius. In addition, we find that the luminosity can be well characterized by the mass accretion rate independently of the stellar mass and equation of state, if the direct Urca does not work inside the star. Since the luminosity from the neutron star with the direct Urca can deviate from this characterization, one could identify whether the direct Urca process works or not inside the star by observing the luminosity. Both information obtained from the gravitational waves and luminosity help us to understand the equation of state for neutron star matter.
References in corpus (43)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Shapiro delay measurement of a two solar mass neutron star
- A Massive Pulsar in a Compact Relativistic Binary
- PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
- A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
- A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
- Neutron Stars and the Nuclear Equation of State
- Models of crustal heating in accreting neutron stars
- Nuclear equation of state for core-collapse supernova simulations with realistic nuclear forces
- Signatures of hadron-quark mixed phase in gravitational waves
- Probing the Equation of State of Nuclear Matter via Neutron Star Asteroseismology
- Effects of symmetry energy on equation of state for simulations of core-collapse supernovae and neutron-star mergers
- Was GW170817 a canonical neutron star merger? Bayesian analysis with a third family of compact stars
- Gravitational wave asteroseismology with protoneutron stars
- Supernova Seismology: Gravitational Wave Signatures of Rapidly Rotating Core Collapse
- A lower limit on the heat capacity of the neutron star core
- Probing mass-radius relation of protoneutron stars from gravitational-wave asteroseismology
- Dependence of outer boundary condition on protoneutron star asteroseismology with gravitational-wave signatures
- Universal relation for supernova gravitational waves
- Probing nuclear bubble structure via neutron star asteroseismology
- Accuracy of relativistic Cowling approximation in protoneutron star asteroseismology
- Dimension dependence of numerical simulations on gravitational waves from protoneutron stars
- Avoided crossing in gravitational wave spectra from protoneutron star
- Determination of properties of protoneutron stars toward black hole formation via gravitational wave observations
- Neutron star asteroseismology and nuclear saturation parameter
- New constraints on the neutron-star mass and radius relation from terrestrial nuclear experiments
- Neutron star mass formula with nuclear saturation parameters for asymmetric nuclear matter
- Gravitational wave asteroseismology for low-mass neutron stars
- Neutron star mass-radius constraints using the high-frequency QPOs of GRB 200415A
- Gravitational wave asteroseismology on cooling neutron stars
- Estimating the nuclear saturation parameter via low-mass neutron star asteroseismology
- Effects of Nuclear Equation of State on Type-I X-ray Bursts: Interpretation of the X-ray Bursts from GS 1826-24
- Magnetar QPOs and neutron star crust elasticity
- Thermal evolution of neutron stars in soft X-ray transients with thermodynamically consistent models of the accreted crust
- Stability of the protoneutron stars toward black hole formation
- Universality in supernova gravitational waves with proto-neutron star properties
- Impacts of the direct URCA and Superfluidity inside a Neutron Star on Type-I X-Ray Bursts and X-Ray Superbursts
- Shear and interface modes in neutron stars with pasta structures
- Empirical neutron star mass formula based on experimental observables
- Shear oscillations in neutron stars and the nuclear symmetry energy
- The Impacts of Neutron-Star Structure and Base Heating on Type I X-Ray Bursts and Code Comparison
- Quiescent luminosities of accreting neutron stars with different equation of states
- Gravitational waves from nonradial oscillations of stochastically accreting neutron stars
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