A gravitational wave pulse leaves a small permanent rotation of spin in the plane perpendicular to propagation for extended bodies, and an ensemble of such bodies shows changes in entropy and energy that depend on the wave's polarization.
On the Gravitational Precession Memory Effect for an Ensemble of Gyroscopes
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abstract
We study the thermodynamic properties of a freely falling ensemble of gyroscopes after the passage of a weak gravitational wave. Due to the precession memory effect, the thermodynamic quantities will experience a change because of the space-time perturbation. We discuss that this GravoThermo memory effect potentially can be used for the detection of the gravitational waves.
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On the Dynamics of Extended Bodies and the GravoThermo Memory Effect
A gravitational wave pulse leaves a small permanent rotation of spin in the plane perpendicular to propagation for extended bodies, and an ensemble of such bodies shows changes in entropy and energy that depend on the wave's polarization.