{"id":672016,"date":"2026-09-04T09:58:10","date_gmt":"2026-09-04T09:58:10","guid":{"rendered":"https:\/\/www.europesays.com\/ie\/672016\/"},"modified":"2026-09-04T09:58:10","modified_gmt":"2026-09-04T09:58:10","slug":"scientists-find-a-new-way-to-hear-the-faint-ringing-of-black-holes","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ie\/672016\/","title":{"rendered":"Scientists Find a New Way To Hear the Faint \u201cRinging\u201d of Black Holes"},"content":{"rendered":"

\"Black<\/a>When two black holes collide and merge, they release gravitational waves. These waves can be detected by sensitive instruments on Earth, allowing scientists to determine the mass and spin of the black holes. Credit: Maggie Chiang for Simons Foundation<\/p>\n

A new method maps the subtle gravitational wave vibrations produced by merging black holes, potentially enabling more precise tests of general relativity.<\/strong><\/p>\n

When two black holes collide, the violence of the merger does not end immediately. The newly formed, larger black hole continues to \u2018ring\u2019 as it settles into a stable shape, and researchers have developed a new way to analyze those vibrations in greater detail.<\/p>\n

Unlike a bell or guitar string, a black hole does not produce sound. Instead, it sends out gravitational waves, ripples in spacetime first predicted by Albert Einstein.<\/p>\n

The frequencies of these vibrations depend on the final black hole\u2019s mass and spin, allowing scientists to extract information about the object created by the merger.<\/p>\n

Known as quasinormal modes, these vibrations act like a fingerprint for the black hole. Measuring them provides an important way to test Einstein\u2019s general theory of relativity under some of the most extreme gravitational conditions in the universe.<\/p>\n

A new method separates the black hole\u2019s notes<\/p>\n

Researchers at the University of Cambridge<\/a> have now developed a technique that can identify and catalog these modes more accurately. In a study published in Physical Review Letters, they analyzed computer simulations of black hole mergers and detected not only the fundamental \u2018note\u2019 produced during the ringdown, but also \u2018overtones,\u2019 weaker harmonics that disappear more rapidly.<\/p>\n

\u201cWhile the loudest mode is routinely observed in gravitational wave data, many quieter modes are much more difficult to detect, and there has been ongoing debate about which modes are present and when they appear,\u201d said Richard Dyer from Cambridge\u2019s Institute of Astronomy, the study\u2019s first author. \u201cOur method provides a systematic, data-driven way to resolve this uncertainty, and our results provide a reference for both theoretical studies and real observations.\u201d<\/p>\n

The technique relies on Bayesian analysis, a statistical approach that weighs competing evidence to determine which explanation is most probable for a particular dataset.<\/p>\n

Fainter vibrations reveal more complex behavior<\/p>\n

Beyond the fundamental \u2018notes\u2019 and \u2018overtones,\u2019 the researchers identified unusual \u2018nonlinear modes\u2019 in the simulations. These vibrations arise when two or more fundamental frequencies interact, producing more complicated signals similar to the tones generated by an electric guitar played with heavy distortion. Finding them requires high-quality data and careful analysis because the weaker signals must be separated from noise.<\/p>\n

\u201cThe ringdown is one of the most direct probes of black holes we have,\u201d said Dyer. \u201cBut extracting all the information it contains is hard. We wanted a principled, data-driven way to do that.\u201d<\/p>\n

Better mode maps could sharpen relativity tests<\/p>\n

Dyer and coauthor Dr Christopher Moore tested the method using a publicly available catalog of highly precise simulations that follow gravitational waves out to the theoretical boundary where the signals can be measured cleanly. Across simulated mergers involving a wide range of mass ratios and spin configurations, they recorded which modes could be detected and when those signals appeared.<\/p>\n

The researchers say these results could aid interpretation of observations from current gravitational wave detectors such as LIGO and Virgo, as well as next-generation instruments. Knowing which frequencies are likely to appear in a particular merger could enable more precise tests of general relativity, including checks of whether the final black hole has the properties predicted by Einstein\u2019s equations.<\/p>\n

Reference: \u201cQuasinormal Mode Content of Binary Black Hole Ringdowns\u201d by Richard Dyer and Christopher J. Moore, 13 May 2026, Physical Review Letters.
DOI: 10.1103\/ptmd-rz1t<\/a><\/p>\n

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Follow us on Google<\/a> and Google News<\/a>.<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"When two black holes collide and merge, they release gravitational waves. These waves can be detected by sensitive…\n","protected":false},"author":2,"featured_media":672017,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[271],"tags":[1025,3514,18,18146,24140,19,17,452,133,19561],"class_list":["post-672016","post","type-post","status-publish","format-standard","has-post-thumbnail","category-physics","tag-astrophysics","tag-black-hole","tag-eire","tag-general-relativity","tag-gravitational-waves","tag-ie","tag-ireland","tag-physics","tag-science","tag-university-of-cambridge"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ie\/117212186724937636","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts\/672016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/comments?post=672016"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts\/672016\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/media\/672017"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/media?parent=672016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/categories?post=672016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/tags?post=672016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}