| Institution: | 1. ARTEMIS, Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Nice, F-06304 France;2. Institut de Fisica d'Altes Energies (IFAE), Edifici Cn. Facultat Ciencies, Universitat Autonoma de Barcelona, Bellaterra (Barcelona), E-08193 Spain;3. Department of Physics, Royal Holloway, University of London, TW20 0EX, United Kingdom;4. Dipartimento di Fisica “E. Fermi”, Université di Pisa, Pisa, I-56127 Italy
INFN, Sezione di Pisa, Pisa, I-56127 Italy;5. Department of Physics, Center for High Energy and High Field Physics, National Central University, Zhongli District, Taoyuan City, 32001 Taiwan;6. Department of Physics and Astronomy, Universiteit Gent, Ghent, B-9000 Belgium |
| Abstract: | Standard sirens have been the central paradigm in gravitational-wave cosmology so far. From the gravitational wave signature of compact star binaries, it is possible to measure the luminosity distance of the source directly, and if additional information on the source redshift is provided, a measurement of the cosmological expansion can be performed. This review article discusses several methodologies that have been proposed to use gravitational waves for cosmological studies. Methods that use only gravitational-wave signals and methods that use gravitational waves in conjunction with additional observations such as electromagnetic counterparts and galaxy catalogs will be discussed. The review also discusses the most recent results on gravitational-wave cosmology, starting from the binary neutron star merger GW170817 and its electromagnetic counterpart and finishing with the population of binary black holes, observed with the third Gravitational-wave Transient Catalog GWTC–3. |
