{"paper":{"title":"First measurement of the Hubble constant from gravitational wave-galaxy cross-correlations","arxiv_id":"2512.15380","primary_cat":"astro-ph.CO","submitted_at":"2025-12-17T12:30:13+00:00","version_compiled":"v2"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13.0 on the question bank abstract-p1-20260923, exactly as returned. 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($D_L$).","hedge":{"p":0.99,"label":"asserted"},"own_p":0.37,"main_claim_p":0.03,"quantitative":false,"quantitative_p":0.23,"role_probabilities":{"gap":0.0,"method":1.0,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":2,"p":0.96,"id":"s2","own":true,"role":"result","text":"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 $5.9\\sigma$ confidence.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.96,"main_claim_p":0.15,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.01,"result":0.96,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.03,"interpretation":0.0}},{"i":3,"p":0.94,"id":"s3","own":true,"role":"result","text":"This signal comes mostly from the best localized event in the catalog, GW190814, which alone provides a $3.4\\sigma$ significance.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.91,"main_claim_p":0.06,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.94,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.06}},{"i":4,"p":1.0,"id":"s4","own":true,"role":"result","text":"Adding also the multimessenger event GW170817, but without using its known redshift, we find $H_0 = 67^{+18}_{-15}$ km s$^{-1}$Mpc$^{-1}$ and the first observational constraint on the GW bias, $b_{\\rm gw} < 4.3$ at 95\\% CI.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.96,"main_claim_p":0.67,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.0,"result":1.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":5,"p":0.86,"id":"s5","own":false,"role":"future_work","text":"These measurements set the stage for future novel cosmological constraints with this 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