{"id":9716,"date":"2025-12-04T20:46:07","date_gmt":"2025-12-04T15:16:07","guid":{"rendered":"http:\/\/192.168.143.208\/pamu\/?post_type=event&#038;p=9716"},"modified":"2025-12-12T14:51:41","modified_gmt":"2025-12-12T09:21:41","slug":"constraining-the-hubble-constant-using-gravitational-waves-from-dark-sirens","status":"publish","type":"event","link":"http:\/\/192.168.143.208\/pamu\/event\/constraining-the-hubble-constant-using-gravitational-waves-from-dark-sirens\/","title":{"rendered":"Constraining the Hubble Constant using Gravitational Waves from Dark Sirens"},"content":{"rendered":"<p><span data-sheets-root=\"1\">Gravitational waves (GWs) from compact binary coalescences, such as binary black holes (BBHs) or binary neutron stars (BNSs), offer a novel probe to study the expansion rate of the Universe. GWs provide a direct estimate of the luminosity distances of binary mergers but not their redshifts unless their electromagnetic (EM) counterparts are observed. In this presentation, I will discuss two Bayesian formalisms to estimate the Hubble constant from dark sirens, BBHs, and BNSs, which are not accompanied by EM counterparts. First, I will describe an approach to infer the Hubble constant from the cross-correlation between galaxies with known redshifts and individual BBH events, utilizing large-scale information that has so far not been used when statistically identifying the host of the GW event. Second, I will present a method that uses tidal deformabilities in BNS signals, combined with the knowledge of the neutron star equation of state (EoS), to break the redshift-mass degeneracy. This enables joint inference of the Hubble constant, EoS, and BNS population and remains effective for current as well as next-generation detectors.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gravitational waves (GWs) from compact binary coalescences, such as binary black holes (BBHs) or binary neutron stars (BNSs), offer a novel probe to study the expansion rate of the Universe. GWs provide a direct estimate of the luminosity distances of binary mergers but not their redshifts unless their electromagnetic (EM) counterparts are observed. In this [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","categories":[107],"tags":[],"class_list":["post-9716","event","type-event","status-publish","hentry","category-past-short-term-event"],"acf":[],"_links":{"self":[{"href":"http:\/\/192.168.143.208\/pamu\/wp-json\/wp\/v2\/event\/9716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/192.168.143.208\/pamu\/wp-json\/wp\/v2\/event"}],"about":[{"href":"http:\/\/192.168.143.208\/pamu\/wp-json\/wp\/v2\/types\/event"}],"version-history":[{"count":1,"href":"http:\/\/192.168.143.208\/pamu\/wp-json\/wp\/v2\/event\/9716\/revisions"}],"predecessor-version":[{"id":9722,"href":"http:\/\/192.168.143.208\/pamu\/wp-json\/wp\/v2\/event\/9716\/revisions\/9722"}],"wp:attachment":[{"href":"http:\/\/192.168.143.208\/pamu\/wp-json\/wp\/v2\/media?parent=9716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/192.168.143.208\/pamu\/wp-json\/wp\/v2\/categories?post=9716"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/192.168.143.208\/pamu\/wp-json\/wp\/v2\/tags?post=9716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}