{
  "abstract": "We measure for the first time the Hubble constant ( H ₀ ) from the cross correlation of galaxies and gravitational waves (GWs), by applying the Peak Sirens method. This method consists of finding the peak of the 3D angular cross-spectrum C ℓ ( z , D L ) between the galaxy redshifts ( z ) and the GW luminosity distances ( D L ). Using two GW events from the GWTC-3.0 catalog and the GLADE + galaxy catalog, we make the first detection of the cross-correlation peak at 5.9 σ confidence. This signal comes mostly from the best localized event in the catalog, GW190814, which alone provides a 3.4 σ significance. Adding the multimessenger event GW170817, but without using its known redshift, we find H 0 = 6 7 − 15 + 18 km s ⁻¹ Mpc ⁻¹ and the first observational constraint on the GW bias, b gw < 4.3 at 95% confidence interval. These measurements set the stage for future novel cosmological constraints with this technique.",
  "abstract_shown": true,
  "affiliations": [
    "University of Portsmouth",
    "ICTP South American Institute for Fundamental Research",
    "Université PSL",
    "Queen Mary University of London",
    "Universidade de São Paulo",
    "Centro Brasileiro de Pesquisas Físicas",
    "Universidade Federal do Rio de Janeiro",
    "Universidade Federal do Espírito Santo"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Isabela Santiago de Matos",
      "orcid": "0000-0002-2686-2536"
    },
    {
      "affs": [
        0,
        2,
        3
      ],
      "name": "Charles Dalang",
      "orcid": "0000-0002-7373-6903"
    },
    {
      "affs": [
        0
      ],
      "name": "Tessa Baker",
      "orcid": "0000-0001-5470-7616"
    },
    {
      "affs": [
        4
      ],
      "name": "Raul Abramo",
      "orcid": "0000-0001-8295-7022"
    },
    {
      "affs": [
        4
      ],
      "name": "João Ferri",
      "orcid": "0009-0005-8123-2528"
    },
    {
      "affs": [
        5,
        6,
        7
      ],
      "name": "Miguel Quartin",
      "orcid": "0000-0001-5853-6164"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6jr5jev9v8vma.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/ae9a7a",
  "fulltext_url": null,
  "id": "6jr5jev9v8vma",
  "issns": [
    "1538-4357",
    "0004-637X"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/ae9a7a",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
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      "feed-journal",
      "astronomy/general"
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  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/ae9a7a/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-02",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/6jr5jev9v8vma.ris",
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "First Measurement of the Hubble Constant from Gravitational Wave–Galaxy Cross Correlations",
  "title_text": "First Measurement of the Hubble Constant from Gravitational Wave–Galaxy Cross Correlations",
  "type": "peer-reviewed",
  "updated_at": "2026-11-05T00:20:44Z",
  "url": "https://research.draconitic.com/paper/6jr5jev9v8vma",
  "venue": "The Astrophysical Journal",
  "versions": []
}