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Similarly to light, gravitational waves can be gravitationally lensed as they propagate near massive astrophysical objects such as galaxies, stars, or black holes. In recent years, forecasts have suggested a reasonable chance of strong…

General Relativity and Quantum Cosmology · Physics 2021-12-09 Justin Janquart , Eungwang Seo , Otto A. Hannuksela , Tjonnie G. F. Li , Chris Van Den Broeck

Gravitational wave astronomy has become a reality after the historical detections accomplished during the first observing run of the two advanced LIGO detectors. In the following years, the number of detections is expected to increase…

Instrumentation and Methods for Astrophysics · Physics 2017-02-01 Alejandro Torres-Forné , Antonio Marquina , José A. Font , José M. Ibáñez

We propose a new model of Bayesian Neural Networks to not only detect the events of compact binary coalescence in the observational data of gravitational waves (GW) but also identify the full length of the event duration including the…

Instrumentation and Methods for Astrophysics · Physics 2021-03-31 Yu-Chiung Lin , Jiun-Huei Proty Wu

Gravitational wave (GW) detectors, such as LIGO, Virgo, and KAGRA, detect faint signals from distant astrophysical events. However, their high sensitivity also makes them susceptible to background noise, which can obscure these signals.…

General Relativity and Quantum Cosmology · Physics 2025-10-23 Tom Dooney , Harsh Narola , Stefano Bromuri , R. Lyana Curier , Chris Van Den Broeck , Sarah Caudill , Daniel Stanley Tan

We describe a case study of translational research, applying interpretability techniques developed for computer vision to machine learning models used to search for and find gravitational waves. The models we study are trained to detect…

General Relativity and Quantum Cosmology · Physics 2022-02-16 Mohammadtaher Safarzadeh , Asad Khan , E. A. Huerta , Martin Wattenberg

Continuous gravitational waves are analogous to monochromatic light and therefore could be used to detect wave effects like interference or diffraction. This would be possible with strongly lensed gravitational waves. This article reviews…

General Relativity and Quantum Cosmology · Physics 2022-02-02 Marek Biesiada , Sreekanth Harikumar

The exquisite sensitivity of the advanced LIGO detectors has enabled the detection of multiple gravitational wave signals. The sophisticated design of these detectors mitigates the effect of most types of noise. However, advanced LIGO data…

General Relativity and Quantum Cosmology · Physics 2018-07-15 Daniel George , Hongyu Shen , E. A. Huerta

To recognize gravitational wave lensing events and being able to differentiate between similar lens models will be of crucial importance once one will be observing several lensing events of gravitational waves per year. In this work, we…

Cosmology and Nongalactic Astrophysics · Physics 2021-12-03 Paolo Cremonese , David F. Mota , Vincenzo Salzano

The detection of gravitational waves (GWs) from binary neutron stars (BNSs) with possible telescope follow-ups opens a window to ground-breaking discoveries in the field of multi-messenger astronomy. With the improved sensitivity of current…

Instrumentation and Methods for Astrophysics · Physics 2025-03-17 Ana Martins , Melissa Lopez , Quirijn Meijer , Gregory Baltus , Marc van der Sluys , Chris Van Den Broeck , Sarah Caudill

Lensing of gravitational waves (GWs) due to intervening massive astrophysical systems between the source and the observer is an inevitable consequence of the general theory of relativity, which can produce multiple GW events with…

General Relativity and Quantum Cosmology · Physics 2026-04-14 Aniruddha Chakraborty , Suvodip Mukherjee

Gravitational lensing of electromagnetic (EM) waves has yielded many profound discoveries across fundamental physics, astronomy, astrophysics, and cosmology. Similar to EM waves, gravitational waves (GWs) can also be lensed. When their…

General Relativity and Quantum Cosmology · Physics 2026-01-28 Zhao-Feng Wu , Otto A. Hannuksela , Martin Hendry , Quynh Lan Nguyen

The direct detection of gravitational waves by LIGO has confirmed general relativity (GR) and sparked rapid growth in gravitational wave (GW) astronomy. However, subtle post-Newtonian (PN) deviations observed during the analysis of high…

General Relativity and Quantum Cosmology · Physics 2025-07-11 Yu-Xin Wang , Xiaotong Wei , Chun-Yue Li , Tian-Yang Sun , Shang-Jie Jin , He Wang , Jing-Lei Cui , Jing-Fei Zhang , Xin Zhang

Gravitational waves (GWs) emanated by stellar mass compact binary coalescences (CBCs), and lensed by galaxy- or cluster-scale lenses, will produce two or more copies of the GW signal. These will have identical phase evolution but differing…

General Relativity and Quantum Cosmology · Physics 2025-02-04 Sudhir Gholap , Kanchan Soni , Shasvath J. Kapadia , Sanjeev Dhurandhar

The detection of gravitational waves by the LIGO-Virgo-KAGRA collaboration has ushered in a new era of observational astronomy, emphasizing the need for rapid and detailed parameter estimation and population-level analyses. Traditional…

General Relativity and Quantum Cosmology · Physics 2025-07-22 Bo Liang , He Wang

We discuss the gravitational lensing of gravitational wave signals from coalescing binaries. We delineate the regime where wave effects are significant from the regime where geometric limit can be used. Further, we focus on the effect of…

Cosmology and Nongalactic Astrophysics · Physics 2019-12-18 Ashish Kumar Meena , J S Bagla

As the interferometers detecting gravitational waves are upgraded, improving their sensitivity, the probability of observing strong lensing increases. Once a detection is made, it will be critical to gain as much information as possible…

High Energy Astrophysical Phenomena · Physics 2023-10-31 Mick Wright , Justin Janquart , Martin Hendry

As plans for the construction of third-generation gravitational wave (GW) detectors advance, research into strongly lensed GWs has become increasingly critical. It is anticipated that hundreds of multi-image lensed GWs will be detected…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-11 Youkai Li , Kai Liao , Mingqi Sun , Lilan Yang , Xuheng Ding , Marek Biesiada , Tonghua Liu

With the advancement of third-generation gravitational wave detectors, the identification of strongly lensed gravitational wave (GW) events is expected to play an increasingly vital role in cosmology and fundamental physics. However,…

Instrumentation and Methods for Astrophysics · Physics 2026-03-06 Dejiang Li , Tonghua Liu , Ao Liu , Cuihong Wen , Jieci Wang , Kai Liao , Jiaxing Cui

Gravitational wave lensing, particularly microlensing by compact dark matter (DM), offers a unique avenue to probe the nature of dark matter. However, conventional detection methods are often computationally expensive, inefficient, and…

Instrumentation and Methods for Astrophysics · Physics 2025-09-08 Ao Liu , Tonghua Liu , Dejiang Li , Cuihong Wen , Jieci Wang , Kai Liao , Jiaxing Cui , Huan Zhou

Gravitational lensing is an invaluable probe of the nature of dark matter, and the structures it forms. Lensed gravitational waves in particular allow for unparalleled sensitivity to small scale structures within the lenses, due to the…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-17 Luka Vujeva , Jose María Ezquiaga , Daniel Gilman , Srashti Goyal , Miguel Zumalacárregui
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