{"id":1004,"date":"2021-12-07T10:46:31","date_gmt":"2021-12-07T09:46:31","guid":{"rendered":"https:\/\/eppg.ugent.be\/?page_id=1004"},"modified":"2022-09-22T14:30:58","modified_gmt":"2022-09-22T13:30:58","slug":"gravity","status":"publish","type":"page","link":"https:\/\/eppg.ugent.be\/index.php\/gravity\/","title":{"rendered":"Gravitational waves"},"content":{"rendered":"\n<p>The Experimental Particle Physics group at Ghent University group has recently been broadened into a group working on <strong>Experimental Particle Physics and Gravity<\/strong> with the inclusion of gravitational waves. The <a href=\"https:\/\/gravity.ugent.be\/\" data-type=\"URL\" data-id=\"https:\/\/gravity.ugent.be\/\">Gravity Ghent Group<\/a> is a sub-division pioneering this research. Members of the group are involved with <a href=\"https:\/\/www.virgo-gw.eu\/\" data-type=\"URL\" data-id=\"https:\/\/www.virgo-gw.eu\/\">Virgo<\/a> instrumentation, LIGO-Virgo-KAGRA data analysis, and Observational Science with the&nbsp;<a href=\"http:\/\/www.et-gw.eu\/\">Einstein Telescope<\/a>. Ghent University is a founding partner of the <a href=\"https:\/\/www.etpathfinder.eu\/\">ETPathfinder<\/a>&nbsp;project, and members of the group take part in the&nbsp;instrumentation developments related to this facility in Maastricht. Ghent University is also one of the initial members of the recently-established <a href=\"http:\/\/www.et-gw.eu\/\" data-type=\"URL\" data-id=\"http:\/\/www.et-gw.eu\/\">Einstein Telescope Collaboration<\/a>. A brief description of the gravitational wave research in Ghent University can be found below. Detailed information is also available on the webpage of the <a href=\"https:\/\/gravity.ugent.be\/\" data-type=\"URL\" data-id=\"https:\/\/gravity.ugent.be\/\">Gravity Ghent Group<\/a>.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"has-text-align-left has-x-large-font-size wp-block-heading\" style=\"font-style:normal;font-weight:700\"><strong>Advanced Virgo<\/strong><\/h1>\n\n\n\n<div class=\"wp-block-image size-large is-style-default\"><figure class=\"alignright is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gravity.ugent.be\/wp-content\/images\/2015_11_06_VirgoAerialView_111.jpg\" alt=\"\" width=\"410\" height=\"307\"\/><\/figure><\/div>\n\n\n\n<p><a href=\"https:\/\/www.virgo-gw.eu\" data-type=\"URL\" data-id=\"https:\/\/www.virgo-gw.eu\">Advanced Virgo<\/a> is an interferometric gravitational wave detector located in Cascina, near Pisa, in Italy.  The data from the Virgo detector is analyzed together with the detector from the <a href=\"https:\/\/www.ligo.caltech.edu\/\" data-type=\"URL\" data-id=\"https:\/\/www.ligo.caltech.edu\/\">Advanced LIGO<\/a> detectors in the USA and the KAGRA detector in Japan.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Ghent involvement<\/strong><\/h5>\n\n\n\n<p>Ghent University is a member of the Virgo Collaboration as part of the Belgian <strong>BelGrav<\/strong> Group.<\/p>\n\n\n\n<p>The Ghent Gravity Group is involved in Virgo instrumentation and data analysis:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Characterization of the phase camera of Advanced Virgo<\/li><li><a href=\"https:\/\/gravity.ugent.be\/analysis\/\" data-type=\"URL\" data-id=\"https:\/\/gravity.ugent.be\/analysis\/\">Data analysis<\/a> in the context of <strong>compact binary coalescences<\/strong> and unmodelled <strong>bursts<\/strong> from supernovae <\/li><\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"has-text-align-left has-x-large-font-size wp-block-heading\" style=\"font-style:normal;font-weight:700\"><strong>ETpathfinder<\/strong><\/h1>\n\n\n\n<p><a href=\"https:\/\/www.etpathfinder.eu\/\" data-type=\"URL\" data-id=\"https:\/\/www.etpathfinder.eu\/\" target=\"_blank\" rel=\"noreferrer noopener\">Etpathfinder<\/a> is a R&amp;D research facility funded by Interreg Vlaanderen-Nederland and located in Maastricht.<\/p>\n\n\n\n<div class=\"wp-block-image size-large is-style-rounded\"><figure class=\"alignright is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gravity.ugent.be\/wp-content\/images\/etpathfinder-background.jpg\" alt=\"\" width=\"417\" height=\"417\"\/><\/figure><\/div>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Aim of the project<\/strong><\/h5>\n\n\n\n<p>Next generation gravitational wave detectors, like the <a href=\"http:\/\/www.et-gw.eu\/\" data-type=\"URL\" data-id=\"http:\/\/www.et-gw.eu\/\">Einstein Telescope<\/a>, will introduce a number of new technologies never used before in such kind of detectors and for which a preliminary study and testing is then necessary.<\/p>\n\n\n\n<p>Etpathfinder aims to test some of these new technologies. Specifically, it will be focused on developing prototype and testing:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Cryogenic temperatures (120K and 15K)<\/li><li>New mirror material (Silicon)<\/li><li>New laser wavelength (1550nm and 2100nm)<\/li><li>Advanced quantum noise reduction techniques<\/li><\/ul>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Ghent involvement<\/strong><\/h5>\n\n\n\n<p>Ghent University is one of the founding partners of ETpathfinder (additional information can be found <a rel=\"noreferrer noopener\" href=\"https:\/\/www.ugent.be\/en\/research\/research-ugent\/eu-trackrecord\/interreg\/etpathfinder.htm\" data-type=\"URL\" data-id=\"https:\/\/www.ugent.be\/en\/research\/research-ugent\/eu-trackrecord\/interreg\/etpathfinder.htm\" target=\"_blank\">here<\/a>). <\/p>\n\n\n\n<p>The Ghent Gravity Group is involved in its realisation  for the following aspects:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Vacuum system construction<\/li><li>Design and construction of parts of the Suspension System prototype<\/li><li>Developing and testing photodetectors for 2\u00b5m wavelength<\/li><li>Developing of the Output Mode Cleaner for 2\u00b5m wavelength<\/li><\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>Einstein Telescope<\/strong><\/h1>\n\n\n\n<p>The <a href=\"http:\/\/www.et-gw.eu\/\" data-type=\"URL\" data-id=\"http:\/\/www.et-gw.eu\/\">Einstein Telescope<\/a> is a proposed underground infrastructure to host a third-generation, gravitational-wave observatory.  It builds on the success of current, second-generation laser-interferometric detectors Advanced Virgo and Advanced LIGO, whose breakthrough discoveries of merging black holes and neutron stars over the past years have ushered scientists into the new era of gravitational-wave astronomy. The Belgian-Dutch border region is one of the two prospective sites for the Einstein Telescope.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-medium\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/eppg.ugent.be\/wp-content\/uploads\/2022\/09\/ET-formation-300x200.jpeg\" alt=\"\" class=\"wp-image-1129\" srcset=\"https:\/\/eppg.ugent.be\/wp-content\/uploads\/2022\/09\/ET-formation-300x200.jpeg 300w, https:\/\/eppg.ugent.be\/wp-content\/uploads\/2022\/09\/ET-formation-768x512.jpeg 768w, https:\/\/eppg.ugent.be\/wp-content\/uploads\/2022\/09\/ET-formation.jpeg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure><\/div>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Ghent involvement<\/strong><\/h5>\n\n\n\n<p>Ghent University is one of the initial members of the recently-established <a href=\"http:\/\/www.et-gw.eu\/\" data-type=\"URL\" data-id=\"http:\/\/www.et-gw.eu\/\">Einstein Telescope Collaboration<\/a> [<a href=\"https:\/\/www.ego-gw.it\/blog\/2022\/06\/09\/the-einstein-telescope-scientific-collaboration-is-born\/\" data-type=\"URL\" data-id=\"https:\/\/www.ego-gw.it\/blog\/2022\/06\/09\/the-einstein-telescope-scientific-collaboration-is-born\/\">NEWS<\/a>]. <\/p>\n\n\n\n<p>The Ghent Gravity Group is currently involved with the Einstein Telescope via:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>the Einstein Telescope <a href=\"http:\/\/www.et-gw.eu\/index.php\/observational-science-board\" data-type=\"URL\" data-id=\"http:\/\/www.et-gw.eu\/index.php\/observational-science-board\">Observational Science Board<\/a>: <ul><li>fundamental physics, cosmology, transient GW sources, and data analysis platform <\/li><\/ul><\/li><li>the <a href=\"http:\/\/Etpathfinder\" data-type=\"URL\" data-id=\"Etpathfinder\">ETpathfinder<\/a> project<\/li><\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Experimental Particle Physics group at Ghent University group has recently been broadened into a group working on Experimental Particle Physics and Gravity with the inclusion of gravitational waves. The Gravity Ghent Group is a sub-division pioneering this research. Members of the group are involved with Virgo instrumentation, LIGO-Virgo-KAGRA data analysis, and Observational Science with [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1004","page","type-page","status-publish","hentry"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/eppg.ugent.be\/index.php\/wp-json\/wp\/v2\/pages\/1004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eppg.ugent.be\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/eppg.ugent.be\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/eppg.ugent.be\/index.php\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/eppg.ugent.be\/index.php\/wp-json\/wp\/v2\/comments?post=1004"}],"version-history":[{"count":20,"href":"https:\/\/eppg.ugent.be\/index.php\/wp-json\/wp\/v2\/pages\/1004\/revisions"}],"predecessor-version":[{"id":1142,"href":"https:\/\/eppg.ugent.be\/index.php\/wp-json\/wp\/v2\/pages\/1004\/revisions\/1142"}],"wp:attachment":[{"href":"https:\/\/eppg.ugent.be\/index.php\/wp-json\/wp\/v2\/media?parent=1004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}