{"id":3948,"date":"2016-06-30T19:05:15","date_gmt":"2016-07-01T00:05:15","guid":{"rendered":"http:\/\/huewhite.com\/umb\/?p=3948"},"modified":"2016-06-30T19:05:15","modified_gmt":"2016-07-01T00:05:15","slug":"merging-black-holes","status":"publish","type":"post","link":"https:\/\/huewhite.com\/umb\/2016\/06\/30\/merging-black-holes\/","title":{"rendered":"Merging Black Holes"},"content":{"rendered":"<p>Merging black holes generate gravitational waves &#8211; the target of the recently successful <a href=\"http:\/\/www.ligo.org\/science\/overview.php\" target=\"_blank\">LIGO<\/a> experiment. But generating such a wave takes energy &#8211; a lot of it, as <a href=\"http:\/\/www.newscientist.com\/article\/mg23030783-800-ligo-sees-new-gravitational-wave-from-more-doomed-black-holes\/\" target=\"_blank\">reported<\/a> in <em><strong>NewScientist<\/strong><\/em> (18 June 2016):<\/p>\n<blockquote><p>The second signal, called GW151226, also came from a pair of black holes merging. But these were much lighter \u2013 about 14.2 and 7.5 times the mass of the sun. They merged to form a black hole of 20.8 solar masses, meaning about 1 solar mass of energy radiated away in gravitational waves during the collision.<\/p>\n<p>\u201cThis event radiated the equivalent of the mass of our sun in a couple of seconds,\u201d [Salvatore Vitale of MIT]\u00a0says. \u201cOur own sun radiated about a millionth of its mass in 5 billion years. This really gives you the scale of how violent and sudden this release of energy is, as compared to our everyday experience.\u201d<\/p><\/blockquote>\n<p>That&#8217;s a lot of energy.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Merging black holes generate gravitational waves &#8211; the target of the recently successful LIGO experiment. But generating such a wave takes energy &#8211; a lot of it, as reported in NewScientist (18 June 2016): The second signal, called GW151226, also came from a pair of black holes merging. But these \u2026 <a class=\"continue-reading-link\" href=\"https:\/\/huewhite.com\/umb\/2016\/06\/30\/merging-black-holes\/\"> Continue reading <span class=\"meta-nav\">&rarr; <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3948","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/3948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/comments?post=3948"}],"version-history":[{"count":1,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/3948\/revisions"}],"predecessor-version":[{"id":3949,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/3948\/revisions\/3949"}],"wp:attachment":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/media?parent=3948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/categories?post=3948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/tags?post=3948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}