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The tidal deformation of a neutron star in a binary inspiral driven by the emission of gravitational waves affects the orbital dynamics and produces a measurable modulation of the waves. Late in the inspiral, the external timescale associated with changes in the tidal field becomes comparable to internal timescales associated with hydrodynamical processes within the star, and a regime of dynamical tides takes over from a prior regime of static tides. A recent analysis by Yu et al. [M.N.R.A.S. 519, 4325 (2022)] reveals that nonlinear aspects of the tidal interaction are important during the regime of dynamical tides. We confirm their observation in a general relativistic treatment of the tidal deformation of a neutron star. Work with Tristan Pitre [Phys.Rev.D 112, 084017 (2025)].
