{"id":3928124,"date":"2026-09-24T17:00:21","date_gmt":"2026-09-24T22:00:21","guid":{"rendered":"http:\/\/mikedyess.info\/para\/higher-dimensional-black-holes-hide-an-exact-symmetry-in-their-ringing-and-string-inspired-gravity-breaks-it\/"},"modified":"2026-09-24T17:00:21","modified_gmt":"2026-09-24T22:00:21","slug":"higher-dimensional-black-holes-hide-an-exact-symmetry-in-their-ringing-and-string-inspired-gravity-breaks-it","status":"publish","type":"post","link":"https:\/\/mikedyess.info\/para\/higher-dimensional-black-holes-hide-an-exact-symmetry-in-their-ringing-and-string-inspired-gravity-breaks-it\/","title":{"rendered":"Higher-dimensional black holes hide an exact symmetry in their ringing, and string-inspired gravity breaks it"},"content":{"rendered":"<div>Strike a bell, and it rings with a pitch and a fading that tell you about the bell: its size, its shape, the metal it is made of. Black holes ring too. When two merge, the newborn black hole shivers and sheds gravitational waves in a brief, dying chord, and since 2015, gravitational-wave detectors have been listening. The notes of that chord, which physicists call quasinormal modes, depend only on the black hole&#8217;s mass and spin and on the law of gravity itself. Change the law, and the chord changes.<\/div>\n<p><a target=\"_blank\" href=\"https:\/\/phys.org\/news\/2026-09-higher-dimensional-black-holes-exact.html\" target=\"_blank\">Go to Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Strike a bell, and it rings with a pitch and a fading that tell you about the bell: its size, its shape, the metal it is made of. Black holes ring too. When two merge, the newborn black hole shivers and sheds gravitational waves in a brief, dying chord, and since 2015, gravitational-wave detectors have [&#8230;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-3928124","post","type-post","status-publish","format-standard","hentry","category-latest-in-physics","odd"],"_links":{"self":[{"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/posts\/3928124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/comments?post=3928124"}],"version-history":[{"count":0,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/posts\/3928124\/revisions"}],"wp:attachment":[{"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/media?parent=3928124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/categories?post=3928124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/tags?post=3928124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}