An interference-based method for the detection of strongly lensed gravitational waves

Understand

The strongly lensed gravitational wave (SLGW) is a promising transient phenomenon.

• However, the long-wave nature of gravitational waves poses a significant challenge in identification of its host galaxy.
• To tackle this challenge, we propose a method triggered by the wave optics effect of microlensing.
• The microlensing interference introduce frequency-dependent fluctuations in the waveform.