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Gravitational-wave physics and astronomy in the 2020s and 2030s

Authors: M. Bailes,B. K. Berger,P. R. Brady,M. Branchesi,K. Danzmann,M. Evans,K. Holley-Bockelmann,B. R. Iyer,T. Kajita,S. Katsanevas,M. Kramer,A. Lazzarini,L. Lehner,G. Losurdo,H. Lück,D. E. McClelland,M. A. McLaughlin,M. Punturo,S. Ransom,S. Raychaudhury,D. H. Reitze,F. Ricci,S. Rowan,Y. Saito,G. H. Sanders,B. S. Sathyaprakash,B. F. Schutz,A. Sesana,H. Shinkai,X. Siemens,D. H. Shoemaker,J. Thorpe,J. F. J. van den Brand,S. Vitale
Journal: Nature Reviews Physics
Publisher: Springer Science and Business Media LLC
Publish date: 2021-4-14
ISSN: 2522-5820 DOI: 10.1038/s42254-021-00303-8
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Given that many gravitational-wave events (like binary black hole mergers) don’t have visible light counterparts, how can we be sure that the redshifts we assign to them, using galaxy catalogs and statistical methods, are not biased by assumptions about cosmology or galaxy distributions? And if those assumptions are wrong, could that lead us to incorrect conclusions about the Hubble constant or deviations from standard cosmology?

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