Identification of Lensed Gravitational Waves with Deep Learning

Understand

Similar to light, gravitational waves (GWs) can be lensed.

• Such lensing phenomena can magnify the waves, create multiple images observable as repeated events, and superpose several waveforms together, inducing potentially discernible patterns on the waves.
• In particular, when the lens is small, $\lesssim 10^5 M_\odot$, it can produce lensed images with time delays shorter than the typical gravitational-wave signal length that conspire together to form ``beating patterns''.
• We present a proof-of-principle study utilizing deep learning for identification of such a lensing signature.