@article{article, title  = {{GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation}},

 publisher = {{American Astronomical Society}},

 url = {{https://doi.org/10.3847/2041-8213/ae69dd }},

 year = {{2026}},

 month = {{8}},

 author = {{Abac AG and Abouelfettouh I and Acernese F and Ackley K and Adamcewicz C and Adhicary S and Adhikari D and Adhikari N and Adhikari RX and Adkins VK and Afroz S et al}},

 doi = {{10.3847/2041-8213/ae69dd}},

 volume = {{1007}},

 journal = {{The Astrophysical Journal Letters}},

 issue = {{1}},

 pages = {{L17-L17}},

 note = {{Accessed on 2026/08/11}}}