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

Journal Article · 22 January 2024 · Mon.Not.Roy.Astron.Soc.

DOI: https://doi.org/10.1093/mnras/stae086 · OSTI ID:2333008

Alfradique, V. ^[1]; Bom, C. R. ^[2]; Palmese, A.  ^[3]; Teixeira, G. ^[1]; Santana-Silva, L. ^[1]; Drlica-Wagner, A.  ^[4]; Riley, A. H. ^[5]; Martínez-Vázquez, C. E. ^[6]; Sand, D. J. ^[7]; Stringfellow, G. S. ^[8]; Medina, G. E. ^[9]; Carballo-Bello, J. A. ^[10]; Choi, Y. ^[11]; Esteves, J. ^[12]; Limberg, G. ^[13]; Mutlu-Pakdil, B.  ^[14]; Noël, N. E.D. ^[15]; Pace, A. B. ^[3]; Sakowska, J. D. ^[15]; Wu, J. F. ^[16]

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1. Rio de Janeiro, CBPF
2. Rio de Janeiro, CBPF; CEFET, Rio de Janeiro
3. Carnegie Mellon U.
4. Fermilab; Chicago U., KICP; Chicago U.
5. Durham U., ICC
6. Gemini Observ., Hilo
7. Arizona U., Astron. Dept. - Steward Observ.
8. Colorado U., CASA
9. Toronto U., Astron. Dept.
10. Tarapaca U.
11. Natl. Solar Observ., Tucson
12. U. Michigan, Ann Arbor
13. Chicago U., KICP; Chicago U.; Sao Paulo U., IAG
14. Dartmouth Coll.
15. Surrey U.
16. Baltimore, Space Telescope Sci.; Johns Hopkins U.

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 H_0 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 H_0 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 H_0 posterior from GW190924|$$\_$$|021846 and GW200202|$$\_$$|154313 together with the bright siren GW170817 leads to |$$H_{0} = 68.84^{+15.51}_{-7.74}\, \rm {km\, s^{-1}\, Mpc^{-1}}$$|⁠. 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 |$$H_{0} = 76.00^{+17.64}_{-13.45}\, \rm {km\, s^{-1}\, Mpc^{-1}}$$|⁠.

• Research Organization: Arizona U., Astron. Dept. - Steward Observ.; Baltimore, Space Telescope Sci.; CEFET, Rio de Janeiro; Carnegie Mellon U.; Chicago U.; Chicago U., KICP; Colorado U., CASA; Dartmouth Coll.; Durham U., ICC; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Gemini Observ., Hilo; Johns Hopkins U.; Natl. Solar Observ., Tucson; Rio de Janeiro, CBPF; Sao Paulo U., IAG; Surrey U.; Tarapaca U.; Toronto U., Astron. Dept.; U. Michigan, Ann Arbor
• Sponsoring Organization: US Department of Energy
• Grant/Contract Number: 89243024CSC000002; AC02-07CH11359
• OSTI ID: 2333008
• Report Number(s): FERMILAB-PUB-23-550-LDRD-PPD; oai:inspirehep.net:2713192; arXiv:2310.13695
• Journal Information: Mon.Not.Roy.Astron.Soc., Journal Name: Mon.Not.Roy.Astron.Soc. Journal Issue: 2 Vol. 528
• Country of Publication: United States
• Language: English