Detection of Gravitational memory effect in LISA using triggers from ground-based detectors

Understand

The LIGO-Virgo-Kagra (LVK) collaboration has detected gravitational waves from 90 Compact Binary Coalescences.

• In addition to fortifying the linearized theory of General Relativity (GR), the statistical ensemble of detections also provides prospects of detecting nonlinear effects predicted by GR, one such prediction being the nonlinear gravitational memory effect.
• For detected stellar and intermediate mass compact binaries, the induced strain from the memory effect is one or two orders below the detector noise background.
• Additionally, since most of the energy is radiated at merger the strain induced by the memory effect resembles a step function at the merger time.