Signature of Lorentz Violation in Continuous Gravitational-Wave Spectra of Ellipsoidal Neutron Stars
arXiv:2101.09431 · doi:10.3390/galaxies9010012
Abstract
We study effects of Lorentz-invariance violation on the rotation of neutron stars (NSs) in the minimal gravitational Standard-Model Extension framework, and calculate the quadrupole radiation generated by them. Aiming at testing Lorentz invariance with observations of continuous gravitational waves (GWs) from rotating NSs in the future, we compare the GW spectra of a rotating ellipsoidal NS under Lorentz-violating gravity with those of a Lorentz-invariant one. The former are found to possess frequency components higher than the second harmonic, which does not happen for the latter, indicating those higher frequency components to be potential signatures of Lorentz violation in continuous GW spectra of rotating NSs.
8 pages, 4 figures; Invited research article to special issue "Lorentz Violation in Astroparticles and Gravitational Waves", in press
References in corpus (11)
- Multi-messenger Observations of a Binary Neutron Star Merger
- Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
- Signals for Lorentz Violation in Post-Newtonian Gravity
- Maximum elastic deformations of compact stars with exotic equations of state
- All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO O2 data
- Einstein@Home all-sky search for continuous gravitational waves in LIGO O2 public data
- Search for Continuous Gravitational Waves from Scorpius X-1 in LIGO O2 Data
- Electromagnetic Torques, Precession and Evolution of Magnetic Inclination of Pulsars
- Measuring the Speed of Gravitational Waves from the First and Second Observing Run of Advanced LIGO and Advanced Virgo
- Triaxially-deformed Freely-precessing Neutron Stars: Continuous electromagnetic and gravitational radiation
- Precession of spheroids under Lorentz violation and observational consequences for neutron stars
Cited by in corpus (9)
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- Hamiltonian formulation of an effective modified gravity with nondynamical background fields
- Precession of spheroids under Lorentz violation and observational consequences for neutron stars
- Classical Lagrangians for the nonminimal spin-nondegenerate Standard-Model Extension at higher orders in Lorentz violation
- Spontaneous and Explicit Spacetime Symmetry Breaking in Einstein-Cartan Theory with Background Fields
- Moment of Inertia for Axisymmetric Neutron Stars in the Standard-Model Extension
- Lorentz Violation with Gravitational Waves: Constraints from NANOGrav and IPTA Data