A gravitational-wave measurement of the Hubble constant following the second observing run of Advanced LIGO and Virgo
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(Published version)
Date
2021
Authors
Abbott, B.P.
Abbott, R.
Abbott, T.D.
Abraham, S.
Acernese, F.
Ackley, K.
Adams, C.
Adhikari, R.X.
Adya, V.B.
Affeldt, C.
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Journal article
Citation
The Astrophysical Journal: an international review of astronomy and astronomical physics, 2021; 909(2):218-1-218-18
Statement of Responsibility
B. P. Abbott ... D. Beniwal ... D. D. Brown ... H. Cao ... A. A. Ciobanu ... C. Ingram ... W. Kim ... J. Munch ... S Ng ... D. J. Ottaway ... P. J. Veitch ... et al. (The LIGO Scientific Collaboration and the Virgo Collaboration)
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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−¹Mpc−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.
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Published 2021 March 19.
Corrected by: Erratum: “A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo” (2021, ApJ, 909, 218), in Astrophysical Journal, Volume 923, Number 2, 279. DOI 10.3847/1538-4357/ac4267. This erratum reports two errors, found respectively in the gwcosmo codebase used for estimating the Hubble constant H0 (Gray et al. 2020), and an associated galaxy catalog preprocessing script, both of which affect the results of the published article (Abbott et al. 2021).
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© 2021. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.