Wave effect of gravitational waves intersected with a microlens field: a new algorithm and supplementary study
arXiv:2208.13566 · doi:10.1007/s11433-022-1985-3
Abstract
The increase in gravitational wave (GW) events has allowed receiving strong lensing image pairs of GWs. However, the wave effect (diffraction and interference) due to the microlens field contaminates the parameter estimation of the image pair, which may lead to a misjudgment of strong lensing signals. To quantify the influence of the microlens field, researchers need a large sample of statistical research. Nevertheless, due to the oscillation characteristic, the Fresnel-Kirchhoff diffraction integral's computational time hinders this aspect's study. Although many algorithms are available, most cannot be well applied to the case where the microlens field is embedded in galaxy/galaxy clusters. This work proposes a faster and more accurate algorithm for studying the wave optics effect of microlenses embedded in different types of strong lensing images. Additionally, we provide a quantitative estimation criterion for the lens plane boundary for the Fresnel-Kirchhoff diffraction integral. This algorithm can significantly facilitate the study of wave optics, particularly in the case of microlens fields embedded in galaxy/galaxy clusters.
17 pages, 7 figures, accepted for publication in SCPMA
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- Gravitational lensing of gravitational waves: prospects for probing intermediate-mass black holes in galaxy lenses with global minima image
- Wave effect of gravitational waves intersected with a microlens field II: an adaptive hierarchical tree algorithm and population study
- An interference-based method for the detection of strongly lensed gravitational waves
- Polarization modes of gravitational waves in general Einstein-vector theory
- Accelerated inference of microlensed gravitational waves with machine learning
- Interference patterns for simple lens models in wave-optics regime
- Across the Universe: GW231123 as a magnified and diffracted black hole merger