A general-relativistic calculation of the quadratic tidal constant p2 for polytropic neutron stars shows that nonlinear tides lower the effective dynamical resonance frequency by 10 to 15 percent, confirming Newtonian mode-based results without using normal modes.
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Impact of nonlinearities on relativistic dynamical tides in compact binary inspirals
A general-relativistic calculation of the quadratic tidal constant p2 for polytropic neutron stars shows that nonlinear tides lower the effective dynamical resonance frequency by 10 to 15 percent, confirming Newtonian mode-based results without using normal modes.