Detecting Tidal Resonances in Binary Neutron Stars
Abstract
As a binary neutron star inspirals due to the emission of gravitational waves, the rising tidal frequency resonantly excites vibrational modes. These oscillations are seismological probes of the rich stellar interior, yet it remains to be established whether gravitational-wave interferometers can measure them. Here, we present the first fully Bayesian study of the capability of the Einstein Telescope to detect tidal resonances. We simulate one year of observations and analyse the 200 loudest signals. We find that the Einstein Telescope can identify resonant modes and is sensitive to gravitational-wave phase shifts as small as ΔΦ≈ 0.03 for favourable events. We further show that neglecting resonances can bias the inferred tidal deformabilities. These results establish tidal resonances as a measurable route for asteroseismology with future detectors.
Versions
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BibTeX
@misc{gittins2026detecting,
title = {{Detecting Tidal Resonances in Binary Neutron Stars}},
author = {Fabian Gittins and Harsh Narola and Thibeau Wouters and Peter T. H. Pang and Tanja Hinderer and Chris Van Den Broeck},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.06376},
eprint = {2606.06376},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.06376},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Detecting Tidal Resonances in Binary Neutron Stars
AU - Fabian Gittins
AU - Harsh Narola
AU - Thibeau Wouters
AU - Peter T. H. Pang
AU - Tanja Hinderer
AU - Chris Van Den Broeck
PY - 2026
DA - 2026/10/20
PB - arXiv
DO - 10.48550/arxiv.2606.06376
UR - https://arxiv.org/abs/2606.06376
AB - As a binary neutron star inspirals due to the emission of gravitational waves, the rising tidal frequency resonantly excites vibrational modes. These oscillations are seismological probes of the rich stellar interior, yet it remains to be established whether gravitational-wave interferometers can measure them. Here, we present the first fully Bayesian study of the capability of the Einstein Telescope to detect tidal resonances. We simulate one year of observations and analyse the 200 loudest signals. We find that the Einstein Telescope can identify resonant modes and is sensitive to gravitational-wave phase shifts as small as ΔΦ≈ 0.03 for favourable events. We further show that neglecting resonances can bias the inferred tidal deformabilities. These results establish tidal resonances as a measurable route for asteroseismology with future detectors.
ER -