A gravitational-wave measurement of the hubble constant following the second observing run of advanced LIGO and Virgo

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dc.contributor.author Sengupta, Anand S. et al.
dc.coverage.spatial United Kingdom
dc.date.accessioned 2021-05-14T05:18:44Z
dc.date.available 2021-05-14T05:18:44Z
dc.date.issued 2021-03
dc.identifier.citation Sengupta, Anand S. et al., "A gravitational-wave measurement of the hubble constant following the second observing run of advanced LIGO and Virgo", The Astrophysical Journal, DOI: 10.3847/1538-4357/abdcb7, vol. 909, no. 2, Mar. 2021. en_US
dc.identifier.issn 0004-637X
dc.identifier.issn 1538-4357
dc.identifier.uri https://doi.org/10.3847/1538-4357/abdcb7
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/6455
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 = ${69}_{-8}^{+16}$ 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 ${69}_{-8}^{+17}$ 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.description.statementofresponsibility by Anand S. Sengupta, et al.
dc.format.extent vol. 909, no. 2
dc.language.iso en_US en_US
dc.publisher Astrophysical Journal en_US
dc.title A gravitational-wave measurement of the hubble constant following the second observing run of advanced LIGO and Virgo en_US
dc.type Article en_US
dc.relation.journal IOP Publishing


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