{"id":124798,"date":"2021-07-11T09:22:26","date_gmt":"2021-07-11T16:22:26","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2021\/07\/instability-in-black-hole-vibrational-spectra"},"modified":"2021-07-11T09:22:26","modified_gmt":"2021-07-11T16:22:26","slug":"instability-in-black-hole-vibrational-spectra","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2021\/07\/instability-in-black-hole-vibrational-spectra","title":{"rendered":"Instability in Black Hole Vibrational Spectra"},"content":{"rendered":"<p style=\"padding-right: 20px\"><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/instability-in-black-hole-vibrational-spectra2.jpg\"><\/a><\/p>\n<p>A new analysis of black hole vibrational spectra identifies which frequencies are stable to perturbations\u2014information pertinent for gravitational-wave analysis and quantum gravity modeling.<\/p>\n<p>Are black holes stable when they are slightly perturbed? This question was answered 50 years ago by the physicist C. V. Vishveshwara with a numerical experiment: Vishveshwara imagined sending a wave packet toward a black hole and observing what came out [1]. He found that the scattered wave is a sum of damped sinusoids, whose frequencies and damping times are the free-vibration modes, or so-called quasinormal modes, of the black hole. The damping implies that black holes are stable\u2014they settle back into a stationary state after being perturbed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new analysis of black hole vibrational spectra identifies which frequencies are stable to perturbations\u2014information pertinent for gravitational-wave analysis and quantum gravity modeling. Are black holes stable when they are slightly perturbed? This question was answered 50 years ago by the physicist C. V. Vishveshwara with a numerical experiment: Vishveshwara imagined sending a wave packet [\u2026]<\/p>\n","protected":false},"author":359,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,1617],"tags":[],"class_list":["post-124798","post","type-post","status-publish","format-standard","hentry","category-cosmology","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/124798","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/359"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=124798"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/124798\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=124798"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=124798"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=124798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}