Dark Sirens to Resolve the Hubble-Lemaître Tension

Ssohrab Borhanian, Arnab Dhani, Anuradha Gupta, K. G. Arun, B. S. Sathyaprakash

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article numberL28
JournalAstrophysical Journal Letters
Volume905
Issue number2
DOIs
StatePublished - Dec 20 2020

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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