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 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 signal...
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| Veröffentlicht in: | Science China. Physics, mechanics & astronomy mechanics & astronomy, 2023-03, Vol.66 (3), p.239511, Article 239511 |
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| creator | Shan, Xikai Li, Guoliang Chen, Xuechun Zheng, Wenwen Zhao, Wen |
| description | 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. |
| doi_str_mv | 10.1007/s11433-022-1985-3 |
| format | Article |
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| subjects | Algorithms Astronomy Classical and Continuum Physics Computing time Galactic clusters Gravitational waves Microlenses Observations and Techniques Optics Parameter estimation Physics Physics and Astronomy Wave diffraction |
| title | Wave effect of gravitational waves intersected with a microlens field: A new algorithm and supplementary study |
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