Since their serendipitous discovery, Fast Radio Bursts (FRBs) have garnered a great deal of attention from both observers and theorists. A new class of radio telescopes with wide fields of view have enabled a rapid accumulation of FRB observations, confirming that FRBs originate from cosmological distances. The high occurrence rate of FRBs and the development of new instruments to observe them create opportunities for FRBs to be utilized for a host of astrophysical and cosmological studies. We focus on the rare, and as yet undetected, subset of FRBs that undergo repeated bursts and are strongly gravitationally lensed by intervening structure. An extremely precise timing of burst arrival times is possible for strongly lensed repeating FRBs, and we show how this timing precision enables the search for long wavelength gravitational waves, including those sourced by supermassive black hole binary systems. The timing of burst arrival for strongly lensed repeating FRBs is sensitive to gravitational wave sources near the FRB host galaxy, which may lie at cosmological distances and would therefore be extremely challenging to detect by other means. Timing of strongly lensed FRBs can also be combined with pulsar timing array data to search for correlated time delays characteristic of gravitational waves passing through the Earth.
Searching for Highly Magnified Stars at Cosmological Distances: Discovery of a Redshift 0.94 Blue Supergiant in Archival Images of the Galaxy Cluster MACS J0416.1-2403
Wave-Optics Imprints of Warm Dark Matter Subhalos with Prompt Cusps on Strongly Lensed Gravitational Waves
Università degli Studi di Torino（都灵大学）；INFN – Istituto Nazionale di Fisica Nucleare, Sezione di Torino（意大利国家核物理研究所都灵分部）；University of Amsterdam（阿姆斯特丹大学）；Kavli Institute for the Physics and Mathematics of the Universe, University of Tokyo（东京大学宇宙物质前沿科学中心）
Euclid Quick Data Release (Q1). Searching for giant gravitational arcs in galaxy clusters with mask region-based convolutional neural networks
Università degli Studi di Ferrara（费拉拉大学）；INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna（博洛尼亚天文物理与空间科学研究所）；INAF-Osservatorio Astronomico di Capodimonte（卡波迪蒙特天文台）；Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano（米兰大学阿尔多·蓬特罗利物理系）；INFN-Sezione di Bologna（博洛尼亚意大利国家核物理研究所）；Instituto de Física de Cantabria（坎塔布里亚物理研究所）；INAF-IASF Milano（米兰天文物理与空间科学研究所）
GWTC-4.0: Searches for Gravitational-Wave Lensing Signatures
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)（马克斯·普朗克引力物理研究所（爱因斯坦研究所））；LIGO Hanford Observatory（LIGO汉福德天文台）；Dipartimento di Farmacia, Università di Salerno（萨莱诺大学药学系）；INFN, Sezione di Napoli（意大利国家核物理研究所那不勒斯分部）；University of Warwick（华威大学）；OzGrav, School of Physics & Astronomy, Monash University（蒙纳士大学物理与天文学学院奥兹引力中心）；The Pennsylvania State University（宾夕法尼亚州立大学）；Leibniz Universität Hannover（汉诺威莱布尼茨大学）；University of Wisconsin-Milwaukee（威斯康星大学密尔沃基分校）；LIGO Laboratory, California Institute of Technology（加州理工学院LIGO实验室）；Louisiana State University（路易斯安那州立大学）；Tata Institute of Fundamental Research（塔塔基础研究所）；Centre de Physique Théorique, Aix-Marseille Université（艾克斯-马赛大学理论物理中心）；Université catholique de Louvain（天主教鲁汶大学）；Queen Mary University of London（伦敦大学玛丽女王学院）；University of California, Davis（加州大学戴维斯分校）；University of Minnesota（明尼苏达大学）
