{"id":25,"date":"2003-09-16T22:30:45","date_gmt":"2003-09-16T22:30:45","guid":{"rendered":"http:\/\/agnieszkabiskup.com\/?p=25"},"modified":"2011-05-01T18:34:07","modified_gmt":"2011-05-01T23:34:07","slug":"deep-bass-note-from-deep-black-hole","status":"publish","type":"post","link":"https:\/\/agnieszkabiskup.com\/?p=25","title":{"rendered":"deep bass note from deep black hole"},"content":{"rendered":"<p><span style=\"color: #000000;\">Astronomers reported last week that black holes  can sing bass &#8212; in a manner of speaking. Using NASA&#8217;s Chandra X-ray  Observatory, they have detected the deepest note in the universe, a  B-flat being emitted by a massive black hole in the Perseus galaxy  cluster, 250 million light-years away. Though the researchers could  identify it, they couldn&#8217;t hear it: The note is 57 octaves below  middle-C, at a frequency more than a million billion times deeper than  the limits of human hearing. Using observations from Chandra, the  astronomers found ripples in the gas filling the galaxy cluster. It is  the ripples that are evidence for the sound waves that have traveled  from the black hole in the cluster&#8217;s center. The study&#8217;s team leader,  Andrew Fabian of the Institute of Astronomy in Cambridge, England,  stated in a press release: &#8220;We have observed the prodigious amounts of  light and heat created by a black hole; now we have detected the sound.&#8221; <\/span><\/p>\n<h6><em>This news brief appeared in the Random Data column of the <\/em>Boston Globe&#8217;s<em> Health\/Science section on 9\/16\/2003.<\/em><\/h6>\n","protected":false},"excerpt":{"rendered":"<p>Astronomers reported last week that black holes can sing bass &#8212; in a manner of speaking. Using NASA&#8217;s Chandra X-ray Observatory, they have detected the deepest note in the universe, a B-flat being emitted by a massive black hole in &hellip; <a href=\"https:\/\/agnieszkabiskup.com\/?p=25\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,4],"tags":[],"class_list":["post-25","post","type-post","status-publish","format-standard","hentry","category-boston-globe-3","category-news-briefs"],"_links":{"self":[{"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/posts\/25","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25"}],"version-history":[{"count":9,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/posts\/25\/revisions"}],"predecessor-version":[{"id":1143,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/posts\/25\/revisions\/1143"}],"wp:attachment":[{"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}