{"id":71,"date":"2025-07-17T00:14:31","date_gmt":"2025-07-16T22:14:31","guid":{"rendered":"https:\/\/web.infn.it\/GravitySirens\/?p=71"},"modified":"2026-01-30T16:36:51","modified_gmt":"2026-01-30T15:36:51","slug":"sirens-on-the-rough-sea","status":"publish","type":"post","link":"https:\/\/web.infn.it\/GravitySirens\/2025\/07\/17\/sirens-on-the-rough-sea\/","title":{"rendered":"Sirens on the rough sea"},"content":{"rendered":"\n<p>PhD student <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-3-color\">Sarah Ferraiuolo<\/mark> presented a new study on how the stochastic gravitational-wave background can improve the measures of the Hubble parameter.<\/p>\n\n\n\n<p>The individual gravitationa-wave (GW) sources that we see in our detectors are just the tip of the iceberg. Below them, thousands of silent GW sources compose the stochastic GW background (SGWB). In this paper, we demonstrate that the SGWB can be exploited, along with resolved sources,&nbsp; to measure cosmological expansion parameters.&nbsp; Its inclusion can help us to constrain cosmological models where the Universe is very old.<\/p>\n\n\n\n<p><br>Please, feel free to read our paper and reach out to us for any question or suggestion.<br><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/arxiv.org\/pdf\/2503.14686\">arXiv:2503.14686<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/zenodo.org\/records\/15998815\">Zenodo<\/a><\/div>\n<\/div>\n\n\n\n<p><em><em><em><em><em>Figure: Hubble<\/em><\/em><\/em><\/em><\/em> parameter reconstructed from only resolved GW sources (pink) and with the stochastic GW background (blue).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PhD student Sarah Ferraiuolo presented a new study on how the stochastic gravitational-wave background can improve the measures of the Hubble parameter. The individual gravitationa-wave (GW) sources that we see in our detectors are just the tip of the iceberg. Below them, thousands of silent GW sources compose the stochastic GW background (SGWB). In this [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":73,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,5],"tags":[],"class_list":["post-71","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publications","category-research"],"_links":{"self":[{"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/posts\/71","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/comments?post=71"}],"version-history":[{"count":2,"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/posts\/71\/revisions"}],"predecessor-version":[{"id":366,"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/posts\/71\/revisions\/366"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/media\/73"}],"wp:attachment":[{"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/media?parent=71"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/categories?post=71"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/web.infn.it\/GravitySirens\/wp-json\/wp\/v2\/tags?post=71"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}