Periastron precession effect of -mode dynamical tides on gravitational waves from eccentric double white dwarfs
arXiv:2209.07009 · doi:10.1103/PhysRevD.106.103038
Abstract
The dynamical tide can play an important role in the orbital motion of close eccentric double white dwarf binaries. As the launching of the space-based gravitational-wave detector, the Laser Interferometer Space Antenna (LISA), is just around the corner, detection of gravitational wave signals from such systems is anticipated. In this paper, we discuss the influence of the dynamical tide on eccentric orbits, focusing on the effect on orbital precession. We show that in orbits with a high eccentricity, resonance can cause a large precession when a harmonic of the orbital frequency matches the natural frequencies of the normal modes of the star. In contrast to the case with circular orbits, each mode can encounter multiple resonances with different harmonics and these resonant regions can cover about 10% of the frequency space for orbits with close separations. In this case, the tidal precession effect is distinct from the other contributions and can be identified with LISA if the signal-to-noise ratio is high enough. However, within the highly eccentric-small separation region, the dynamical tide causes chaotic motion and the gravitational wave signal becomes unpredictable. Even not at resonance, the dynamical tide can contribute up to 20% of the precession for orbits close to Roche-lobe filling separation with low eccentricities and LISA can resolve these off-resonant dynamical tide effects within the low eccentricity-small orbital separation region of the parameter space. For lower mass systems, the dynamical tide effect can degenerate with the uncertainties of the eccentricity, making it unmeasurable from the precession rate alone. For higher mass systems, the radiation reaction effect becomes significant enough to constrain the eccentricity, allowing the measurement of the dynamical tide.
arXiv comment13 pages. 9 figures
References in corpus (27)
- The construction and use of LISA sensitivity curves
- LISA Capture Sources: Approximate Waveforms, Signal-to-Noise Ratios, and Parameter Estimation Accuracy
- Angular Resolution of the LISA Gravitational Wave Detector
- The gravitational wave signal from the Galactic disk population of binaries containing two compact objects
- Model Waveform Accuracy Standards for Gravitational Wave Data Analysis
- Measuring the neutron star equation of state with gravitational wave observations
- Accelerating Compact Object Mergers in Triple Systems with the Kozai Resonance: A Mechanism for "Prompt" Type Ia Supernovae, Gamma-Ray Bursts, and Other Exotica
- Predicting the LISA white dwarf binary population in the Milky Way with cosmological simulations
- Nonlinear mode coupling in rotating stars and the r-mode instability in neutron stars
- Formation and evolution of compact binaries in globular clusters: I.Binaries with white dwarfs
- Nonlinear Tides in Close Binary Systems
- On the tidal interaction of massive extra-solar planets on highly eccentric orbit
- Parameter estimation for Galactic binaries by LISA
- Dynamical Tides in Rotating Binary Stars
- On the Formation of Double White Dwarfs through Stable Mass Transfer and a Common Envelope
- Dynamical Tides in Compact White Dwarf Binaries: Tidal Synchronization and Dissipation
- Tidal Excitation of Oscillation Modes in Compact White Dwarf Binaries: I. Linear Theory
- Suitability of post-Newtonian/numerical-relativity hybrid waveforms for gravitational wave detectors
- Eccentric double white dwarfs as LISA sources in globular clusters
- Tidal resonance locks in inspiraling white dwarf binaries
- Dynamical Tides in Highly Eccentric Binaries: Chaos, Dissipation and Quasi-Steady State
- Probing white dwarf interiors with LISA: periastron precession in double white dwarfs
- Proposal for Determining the Total Masses of Eccentric Binaries Using Signature of Periastron Advance in Gravitational Waves
- Tidally-Induced Apsidal Precession in Double White Dwarfs: a new mass measurement tool with LISA
- Gravitational waves from dynamical tides in white dwarf binaries
- On the Antenna Pattern of an Orbiting Interferometer
- Gravitational Pulse Astronomy