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A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo

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A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo

dc.contributor.author	LIGO Scientific Collaboration
dc.contributor.author	Virgo Collaboration
dc.contributor.author	Abbott, B. P.
dc.contributor.author	Aloy Toras, Miguel Angel
dc.contributor.author	Cerdá Durán, Pablo
dc.contributor.author	Cordero Carrión, Isabel
dc.contributor.author	Di Giovanni, Fabrizio
dc.contributor.author	Font Roda, José Antonio
dc.contributor.author	Llorens-Monteagudo, M.
dc.contributor.author	Marquina Vila, Antonio
dc.contributor.author	Obergaulinger, M.
dc.contributor.author	Torres Forné, Alejandro
dc.date.accessioned	2022-05-24T13:17:20Z
dc.date.available	2022-05-24T13:17:20Z
dc.date.issued	2021
dc.identifier.citation	LIGO Scientific Collaboration Virgo Collaboration Abbott, B. P. Aloy Toras, Miguel Angel Cerdá Durán, Pablo Cordero Carrión, Isabel Di Giovanni, Fabrizio Font Roda, José Antonio Llorens-Monteagudo, M. Marquina Vila, Antonio Obergaulinger, M. Torres Forné, Alejandro 2021 A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo Astrophysical Journal 909 218
dc.identifier.uri	https://hdl.handle.net/10550/82965
dc.description.abstract	This paper presents the gravitational-wave measurement of the Hubble constant (H0) using the detections from the first and second observing runs of the Advanced LIGO and Virgo detector network. The presence of the transient electromagnetic counterpart of the binary neutron star GW170817 led to the first standard-siren measurement of H0. Here we additionally use binary black hole detections in conjunction with galaxy catalogs and report a joint measurement. Our updated measurement is H0 = 69+16−8 km s-1 Mpc-1 (68.3% of the highest density posterior interval with a flat-in-log prior) which is an improvement by a factor of 1.04 (about 4%) over the GW170817-only value of 69+17−8 km s-1 Mpc-1. A significant additional contribution currently comes from GW170814, a loud and well-localized detection from a part of the sky thoroughly covered by the Dark Energy Survey. With numerous detections anticipated over the upcoming years, an exhaustive understanding of other systematic effects are also going to become increasingly important. These results establish the path to cosmology using gravitational-wave observations with and without transient electromagnetic counterparts.
dc.language.iso	eng
dc.relation.ispartof	Astrophysical Journal, 2021, vol. 909, num. 218
dc.subject	Astronomia
dc.subject	Gravitació
dc.title	A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo
dc.type	journal article	es_ES
dc.date.updated	2022-05-24T13:17:21Z
dc.identifier.doi	10.3847/1538-4357/abdcb7
dc.identifier.idgrec	148466
dc.rights.accessRights	open access	es_ES