A dark siren measurement of the Hubble constant using gravitational wave events from the first three LIGO/Virgo observing runs and DELVE

V. Alfradique, C. R. Bom, A. Palmese, G. Teixeira, L. Santana-Silva, A. Drlica-Wagner, A. H. Riley, C. E. Martínez-Vázquez, D. J. Sand, G. S. Stringfellow, G. E. Medina, J. A. Carballo-Bello, Y. Choi, J. Esteves, G. Limberg, B. Mutlu-Pakdil, N. E.D. Noël, A. B. Pace, J. D. Sakowska, J. F. Wu

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The current and next observation seasons will detect hundreds of gravitational waves (GWs) from compact binary systems coalescence at cosmological distances. When combined with independent electromagnetic measurements, the source redshift will be known, and we will be able to obtain precise measurements of the Hubble constant H0 via the distance–redshift relation. However, most observed mergers are not expected to have electromagnetic counterparts, which prevents a direct redshift measurement. In this scenario, one possibility is to use the dark sirens method that statistically marginalizes over all the potential host galaxies within the GW location volume to provide a probabilistic source redshift. Here we presented H0 measurements using two new dark sirens compared to previous analyses using DECam data: GW190924 021846 and GW200202 154313. The photometric redshifts of the possible host galaxies of these two events are acquired from the DECam Local Volume Exploration Survey (DELVE) carried out on the Blanco telescope at Cerro Tololo. The combination of the H0 posterior from GW190924 021846 and GW200202 154313 together with the bright siren GW170817 leads to H0 = 68.84+−7157451 km s−1 Mpc−1. Including these two dark sirens improves the 68 per cent confidence interval (CI) by 7 per cent over GW170817 alone. This demonstrates that the addition of well-localized dark sirens in such analysis improves the precision of cosmological measurements. Using a sample containing 10 well-localized dark sirens observed during the third LIGO/Virgo observation run, without the inclusion of GW170817, we determine a measurement of H0 = 76.00+−1317.4564

Original languageEnglish (US)
Pages (from-to)3249-3259
Number of pages11
JournalMonthly Notices of the Royal Astronomical Society
Volume528
Issue number2
DOIs
StatePublished - Feb 1 2024

Keywords

  • catalogues
  • cosmology: observations
  • gravitational waves
  • surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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