Detecting Strong Gravitational Lensing of Gravitational Waves with TianQin

Understand

When gravitational waves (GWs) pass by a massive object on its way to Earth, a strong gravitational lensing effect will happen.

• Thus, the GW signal will be amplified, deflected, and delayed in time.
• Through analyzing the lensed GW waveform, physical properties of the lens can be inferred.
• On the other hand, neglecting lensing effects in the analysis of GW data may induce systematic errors in the estimating of source parameters.