Seminarium Teorii Względności i Grawitacji

The LIGO/Virgo/KAGRA (LVK) collaboration has discovered several dozen binary mergers since 2015; however, binary mergers are not the exclusive sources of gravitational waves. Asymmetric rotating neutron stars and planetary or asteroid mass-primordial BH (PBH) binaries during their in-spiral phase also emit quasi-monochromatic, long-duration gravitational waves. Detecting signals from these sources requires longer observation times due to their low amplitudes relative to detector sensitivities, and thus far, their detection has not been confirmed. In the line of sight, a massive object is present; the signal can be gravitationally lensed, temporarily enhancing the source's signal. This allows for the detection and investigation of the physical nature of both the lensing object and the source. This presentation provides a brief overview of the gravitational wave lensing effect and explores the impact of lensing signatures on long-duration signals.