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Dark sirens to resolve the Hubble-Lemaître tension

Borhanian, Ssohrab, Dhani, Arnab, Gupta, Anuradha, Arun, K. G. and Sathyaprakash, B. S. 2020. Dark sirens to resolve the Hubble-Lemaître tension. Astrophysical Journal Letters 905 (2) , L28. 10.3847/2041-8213/abcaf5
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The planned sensitivity upgrades to the LIGO and Virgo facilities could uniquely identify host galaxies of dark sirens—compact binary coalescences without any electromagnetic counterparts—within a redshift of z = 0.1. This is aided by the higher-order spherical harmonic modes present in the gravitational-wave signal, which also improve distance estimation. In conjunction, sensitivity upgrades and higher modes will facilitate an accurate, independent measurement of the host galaxy's redshift in addition to the luminosity distance from the gravitational-wave observation to infer the Hubble–Lemaître constant H 0 to better than a few percent in 5 yr. A possible Voyager upgrade or third-generation facilities would further solidify the role of dark sirens for precision cosmology in the future.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: American Astronomical Society
ISSN: 2041-8205
Date of First Compliant Deposit: 7 January 2021
Date of Acceptance: 14 November 2020
Last Modified: 19 Jan 2021 02:44

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