Wave effect of gravitational waves intersected with a microlens field: A new algorithm and supplementary study

The increase in gravitational wave (GW) events has allowed receiving strong lensing image pairs of GWs. However, the effect (diffraction and interference) due to microlens field contaminates parameter estimation pair, which may lead a misjudgment signals. To quantify influence field, researchers need large sample statistical research. Nevertheless, oscillation characteristic, Fresnel-Kirchhoff diffraction integral's computational time hinders this aspect's study. Although many algorithms are available, most cannot be well applied case where is embedded galaxy/galaxy clusters. This work proposes faster more accurate algorithm for studying optics microlenses different types images. Additionally, we provide quantitative criterion lens plane boundary integral. can significantly facilitate study optics, particularly fields