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Galactic interacting double white dwarfs (DWD) are guaranteed gravitational wave (GW) sources for the GW detector LISA, with more than 10^4 binaries expected to be detected over the mission's lifetime. Part of this population is expected to…

Solar and Stellar Astrophysics · Physics 2015-05-28 Francesca Valsecchi , Will M. Farr , Bart Willems , Christopher . J. Deloye , Vassiliki Kalogera

Although not nearly as numerous as binaries with two white dwarfs, eccentric neutron star-white dwarf (NS-WD) binaries are important gravitational-wave (GW) sources for the next generation of space-based detectors sensitive to low frequency…

Solar and Stellar Astrophysics · Physics 2015-06-18 Niharika Sravan , Francesca Valsecchi , Vassiliki Kalogera , Leandro G. Althaus

In globular clusters, dynamical interactions give rise to a population of eccentric double white dwarfs detectable by the Laser Interferometer Space Antenna (LISA) up to the Large Magellanic Cloud. In this Letter, we explore the…

Astrophysics · Physics 2008-12-18 B. Willems , A. Vecchio , V. Kalogera

While dynamical tides only become relevant during the last couple of orbits for circular inspirals, orbital eccentricity can increase their impact during earlier phases of the inspiral by exciting tidal oscillations at each close encounter.…

High Energy Astrophysical Phenomena · Physics 2025-02-07 János Takátsy , Bence Kocsis , Péter Kovács

Galactic short period double white dwarfs (DWD) are guaranteed gravitational wave (GW) sources for the next generation of space-based interferometers sensitive to low-frequency GWs (10^{-4}- 1 Hz). Here we investigate the possibility of…

Solar and Stellar Astrophysics · Physics 2012-08-27 Francesca Valsecchi , Will M. Farr , Bart Willems , Christopher J. Deloye andVicky Kalogera

We study the effect of tidal forcing on gravitational wave signals from tidally relaxed white dwarf pairs in the LISA, DECIGO and BBO frequency band ($0.1-100\,{\rm mHz}$). We show that for stars not in hydrostatic equilibrium (in their own…

High Energy Astrophysical Phenomena · Physics 2020-01-08 L. O. McNeill , Rosemary A. Mardling , B. Müller

Compact white dwarf (WD) binaries are important sources for space-based gravitational-wave (GW) observatories, and an increasing number of them are being identified by surveys like ZTF. We study the effects of nonlinear dynamical tides in…

Solar and Stellar Astrophysics · Physics 2020-07-08 Hang Yu , Nevin N. Weinberg , Jim Fuller

Double white dwarfs are important gravitational wave sources for LISA, as they are some of the most numerous compact systems in our universe. Here we consider finite-sized effects due to tidal interactions, as they are expected to have a…

High Energy Astrophysical Phenomena · Physics 2024-09-12 Grace Fiacco , Neil J. Cornish , Hang Yu

We study tidal interactions in white dwarf binaries in the limiting case of quasi-static tides. The formalism is valid for arbitrary orbital eccentricities and therefore applicable to white dwarf binaries in the Galactic disk as well as…

Solar and Stellar Astrophysics · Physics 2011-02-11 B. Willems , C. J. Deloye , V. Kalogera

In compact white dwarf (WD) binary systems (with periods ranging from minutes to hours), dynamical tides involving the excitation and dissipation of gravity waves play a dominant role in determining the physical conditions of the WDs prior…

Solar and Stellar Astrophysics · Physics 2015-05-30 Jim Fuller , Dong Lai

Eccentric white dwarf-massive black hole binaries can potentially source some extreme X-ray transients, including the recently observed quasi-periodic X-ray eruptions and tidal disruption events at the galactic nuclei. Meanwhile, they are…

High Energy Astrophysical Phenomena · Physics 2025-11-13 Shu Yan Lau , Hang Yu

Compact-object binaries including a white dwarf component are unique among gravitational-wave sources because their evolution is governed not just by general relativity and tides, but also by mass transfer. While the black hole and neutron…

High Energy Astrophysical Phenomena · Physics 2023-06-07 Sylvia Biscoveanu , Kyle Kremer , Eric Thrane

Dynamical tides can provide us vital information about the properties of neutron star (NS) matter. This is particularly true for g-modes, whose frequency and tidal coupling are highly sensitive to the composition of NSs, especially in their…

High Energy Astrophysical Phenomena · Physics 2026-02-18 János Takátsy , Lorenz Zwick , Pankaj Saini , Johan Samsing

The LISA mission will observe gravitational waves emitted from tens of thousands of galactic binaries, in particular white dwarf binary systems. These objects are known to have intense magnetic fields. However, these fields are usually not…

General Relativity and Quantum Cosmology · Physics 2021-09-15 Adrien Bourgoin , Christophe Le Poncin-Lafitte , Stéphane Mathis , Marie-Christine Angonin

We discuss the role of dynamical tidal effects for inspiralling neutron star binaries, focussing on features that may be considered "unmodelled" in gravitational-wave searches. In order to cover the range of possibilities, we consider i)…

High Energy Astrophysical Phenomena · Physics 2018-01-31 N. Andersson , W. C. G. Ho

A white dwarf (WD) captured into a high-eccentricity orbit around a massive black hole (MBH) may undergo many pericenter passages before tidal disruption. During these passages, the tidal potential of the MBH excites internal oscillations…

High Energy Astrophysical Phenomena · Physics 2016-12-22 Michelle Vick , Dong Lai , Jim Fuller

We investigate the dynamical tide in a gravitational wave (GW)-driven coalescing binary involving a neutron star (NS). The NS is assumed to spin rapidly, with its spin axis anti-aligned with the orbit. Such an NS may exist if the binary…

General Relativity and Quantum Cosmology · Physics 2024-07-19 Hang Yu , Phil Arras , Nevin N. Weinberg

In this work, we investigate the impact of tidal torques and mass transfer on the population of double white dwarfs (DWDs) that will be observed with LISA. Starting from a distribution of DWDs at formation predicted by numerical…

Solar and Stellar Astrophysics · Physics 2024-12-11 Alexandre Toubiana , Nikolaos Karnesis , Astrid Lamberts , M. Coleman Miller

Tidal dissipation due to convective turbulent viscosity shapes the evolution of a variety of astrophysical binaries. For example, this type of dissipation determines the rate of orbital circularization in a binary with a post-main sequence…

Solar and Stellar Astrophysics · Physics 2020-08-13 Michelle Vick , Dong Lai

The dynamical evolution of short-period low-mass binary stars (with mass $M < 1.5M_{\odot}$, from formation to the late main-sequence, and with orbital periods less than $\sim$10 days) is strongly influenced by tidal dissipation. This…

Solar and Stellar Astrophysics · Physics 2025-07-18 Jessica Birky , Rory K. Barnes , James R. A. Davenport
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