@article{article, title  = {{GWTC-2.1: Deep extended catalog of compact binary coalescences observed by LIGO and Virgo during the first half of the third observing run}},

 publisher = {{American Physical Society (APS)}},

 url = {{https://doi.org/10.1103/physrevd.109.022001 }},

 year = {{2024}},

 month = {{1}},

 author = {{Abbott R and Abbott TD and Acernese F and Ackley K and Adams C and Adhikari N and Adhikari RX and Adya VB and Affeldt C and Agarwal D and Agathos M et al}},

 doi = {{10.1103/physrevd.109.022001}},

 volume = {{109}},

 journal = {{Physical Review D}},

 issue = {{2}},

 note = {{Accessed on 2025/04/28}}}