lensingGW: a Python package for lensing of gravitational waves
Giulia Pagano, Otto A. Hannuksela, Tjonnie G. F. Li

TL;DR
lensingGW is a Python package that enables systematic analysis of gravitational wave lensing, including strong and microlensing effects, facilitating the study of complex lens configurations and their impact on gravitational wave signals.
Contribution
the paper introduces lensingGW, a novel Python toolkit for modeling and analyzing both strong and microlensing of gravitational waves, expanding capabilities beyond existing limited configurations.
Findings
demonstrates lensingGW's ability to simulate microlensing effects
enables exploration of arbitrary lens configurations
facilitates systematic parameter space investigations
Abstract
Advanced LIGO and Advanced Virgo could observe the first lensed gravitational waves in the coming years, while the future Einstein Telescope could observe hundreds of lensed events. Ground-based gravitational-wave detectors can resolve arrival time differences of the order of the inverse of the observed frequencies. As LIGO/Virgo frequency band spans from a few to a few , the typical time resolution of current interferometers is of the order of milliseconds. When microlenses are embedded in galaxies or galaxy clusters, lensing can become more prominent and result in observable time delays at LIGO/Virgo frequencies. Therefore, gravitational waves could offer an exciting alternative probe of microlensing. However, currently, only a few lensing configurations have been worked out in the context of gravitational-wave lensing. In this paper, we present lensingGW, a Python…
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