2024/04/24 by Clécio R. Bom, Bom, C. R., Viviane Alfradique +11 · 4 citations
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomical Observations and Instrumentation #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Geophysics and Gravity Measurements #High Energy Astrophysical Phenomena (astro-ph.HE)
paper · pdf · doi:10.48550/arxiv.2404.16092
openalex publication_date 2024/04/24 · openalex created_date 2024/04/27 · openalex updated_date 2026/07/28
We present a new constraint on the Hubble constant (H0) from the standard dark siren method using a sample of 5 well-covered gravitational waves (GW) alerts reported during the first part of the fourth LIGO/Virgo/KAGRA observing run and with 3 updated standard dark sirens from third observation run in combination the previous constraints from the first three runs. Our methodology relies on the galaxy catalogue method alone. We use a Deep Learning method to derive the full probability density estimation of photometric redshifts using the Legacy Survey catalogues. We add the constraints from well localized Binary Black Hole mergers to the sample of standard dark sirens analysed in our previous work. We combine the H0 posterior for 5 new standard sirens with other 10 previous events (using the most recent available data for the 5 novel events and updated 3 previous posteriors from O3), finding H0 = 70.4+13.6-11.7~\rm km~s-1~Mpc-1 (68% Confidence interval) with the catalogue method only. This result represents an improvement of ∼ 23% comparing the new 15 dark siren constrain with the previous 10 dark siren constraint and a reduction in uncertainty of ∼ 40% from the combination of 15 dark and bright sirens compared with the GW170817 bright siren alone. The combination of dark and bright siren GW170817 with recent jet constraints yields H0 of 68.0+4.4-3.8~\rm km~s-1~Mpc-1, a ∼ 6% precision from Standard Sirens, reducing the previous constraint uncertainty by ∼ 10% .