{"id":35557,"date":"2024-05-02T07:33:05","date_gmt":"2024-05-01T23:33:05","guid":{"rendered":"https:\/\/www.physics.nus.edu.sg\/?page_id=35557"},"modified":"2024-05-02T10:38:41","modified_gmt":"2024-05-02T02:38:41","slug":"colloquium-2024-jun-badri-krishnan","status":"publish","type":"page","link":"https:\/\/www.physics.nus.edu.sg\/colloquium-2024-jun-badri-krishnan\/","title":{"rendered":"colloquium-2024-jun-badri-krishnan"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"35557\" class=\"elementor elementor-35557\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-57f8a73 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"57f8a73\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4d9c21f\" data-id=\"4d9c21f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d6c2a32 elementor-widget elementor-widget-text-editor\" data-id=\"d6c2a32\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h1 style=\"text-align: center;\">COLLOQUIUM 2024<\/h1>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6ddd763 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6ddd763\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-66bf2f8\" data-id=\"66bf2f8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-899cad4 elementor-widget elementor-widget-text-editor\" data-id=\"899cad4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h2 align=\"center\">Black Hole Spectroscopy: Recent Observations and Future Prospects<\/h2>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f0d3605 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f0d3605\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-03bf5aa\" data-id=\"03bf5aa\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6fdbee7 elementor-widget elementor-widget-text-editor\" data-id=\"6fdbee7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"table-responsive\"><table class=\"table table table-bordered\"><tbody><tr><td style=\"width: 20%;\">Speaker<\/td><td>Badri Krishnan, Radboud University<\/td><\/tr><tr><td style=\"width: 20%;\">Date\/Time<\/td><td>Wednesday, 26 Jun, 3PM<\/td><\/tr><tr><td style=\"width: 20%;\">Location<\/td><td>Conference room: S11-02-07<\/td><\/tr><tr><td style=\"width: 20%;\">Registration link<\/td><td><a href=\"http:\/\/tiny.cc\/7suwxz\">http:\/\/tiny.cc\/7suwxz<\/a><\/td><\/tr><tr><td style=\"width: 20%;\">Host<\/td><td>Asst\/Prof Alvin Chua<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-50bcd86 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"50bcd86\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-eba1096\" data-id=\"eba1096\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dc27915 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"dc27915\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h4>Abstract<\/h4><p>A perturbed black hole emits a characteristic spectrum of gravitational wave resonant modes. An observation of these resonant modes can allow us to uniquely determine the properties of the black hole. It can potentially also provide direct evidence for the existence of black hole and distinguish it from other alternatives. Somewhat unexpectedly, there is strong evidence that these resonant modes have been detected in two binary black home merger events detected by the LIGO and Virgo gravitational wave detectors. In this talk I will summarize these results, related controversies, and the present status of such claims. Future observations of loud events from high mass black hole mergers with more sensitive detectors might allow unambiguous observations of these resonant modes, but several challenges will need to be addressed. I will discuss prospects for black hole spectroscopy with the next generation of ground and space based detectors.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-d1d00bf\" data-id=\"d1d00bf\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-27c5441 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"27c5441\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1171\" height=\"531\" src=\"https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan-pic.png\" class=\"attachment-full size-full wp-image-35560\" alt=\"\" srcset=\"https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan-pic.png 1171w, https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan-pic-300x136.png 300w, https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan-pic-1024x464.png 1024w, https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan-pic-768x348.png 768w\" sizes=\"(max-width: 1171px) 100vw, 1171px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aaee6c5 elementor-widget elementor-widget-text-editor\" data-id=\"aaee6c5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p style=\"text-align: center;\">The resonant frequencies for the binary merger event GW190521 reported in Capano et al, PRL 131, 221402 (2023)<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4a10bba elementor-reverse-tablet elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4a10bba\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-37526fc\" data-id=\"37526fc\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-78a6a1b elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"78a6a1b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"859\" height=\"1050\" src=\"https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan.jpg\" class=\"attachment-full size-full wp-image-35559\" alt=\"\" srcset=\"https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan.jpg 859w, https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan-245x300.jpg 245w, https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan-838x1024.jpg 838w, https:\/\/www.physics.nus.edu.sg\/wp-content\/uploads\/sites\/5\/2024\/05\/Badri-Krishnan-768x939.jpg 768w\" sizes=\"(max-width: 859px) 100vw, 859px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-39d79e6\" data-id=\"39d79e6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ff00f43 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"ff00f43\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h4>Biography<\/h4><p>Badri Krishnan is the Professor of Fundamental Physics from Strong Gravity at Radboud University in Nijmegen, The Netherlands. He was previously a senior scientist at the Max Planck Institute for Gravitational Physics in Hannover and Potsdam, Germany. His research interests are in mathematical and numerical aspects of general relativity, and in the observation and interpretation of gravitational waves.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>COLLOQUIUM 2024 Black Hole Spectroscopy: Recent Observations and Future Prospects Speaker Badri Krishnan, Radboud University Date\/Time Wednesday, 26 Jun, 3PM&#8230;<\/p>\n","protected":false},"author":77,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-35557","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/pages\/35557"}],"collection":[{"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/users\/77"}],"replies":[{"embeddable":true,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/comments?post=35557"}],"version-history":[{"count":10,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/pages\/35557\/revisions"}],"predecessor-version":[{"id":35577,"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/pages\/35557\/revisions\/35577"}],"wp:attachment":[{"href":"https:\/\/www.physics.nus.edu.sg\/wp-json\/wp\/v2\/media?parent=35557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}