Michele Mancarella
Centre Physique Théorique (CPT), Luminy, Univ. Méditerranée (Marseille, France)
Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris
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| « Gravitational-wave cosmology with GWTC-4.0 » |
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Michele Mancarella |
| I will present cosmological results from the LIGO–Virgo–KAGRA Collaboration’s analysis of the latest released catalog of transient sources, GWTC-4.0. In this study, 142 gravitational-wave events are used to constrain the Hubble constant and to test modified gravitational-wave propagation. These constraints rely on statistical associations with galaxy catalogs, features in the compact-object mass distribution, and the bright siren GW170817. After a brief overview of the catalog, I will discuss distance measurements, followed by a detailed description of the statistical methods used to extract cosmological information from the ensemble of sources. I will conclude with a summary of the results and future perspectives. |
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vendredi 17 octobre 2025 - 11:00 Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |