The gravitational-wave memory effect
The gravitational-wave memory effect
The nonlinear memory effect is a slowly-growing, non-oscillatory contribution to the gravitational-wave amplitude.It originates from gravitational waves that are sourced by the previously emitted waves.In an ideal gravitationalwave interferometer a gravitational-wave with memory causes a permanent displacement of the test masses that persists after the wave has passed.Surprisingly, the nonlinear …