{"id":411,"date":"2025-01-15T11:23:57","date_gmt":"2025-01-15T11:23:57","guid":{"rendered":"https:\/\/brevities.harddfan.net\/blog\/?p=411"},"modified":"2025-01-29T19:52:25","modified_gmt":"2025-01-29T19:52:25","slug":"creative-destruction","status":"publish","type":"post","link":"https:\/\/brevities.harddfan.net\/blog\/uncategorized\/creative-destruction\/","title":{"rendered":"Creative Destruction"},"content":{"rendered":"<p>Our beginning and our end \u2026<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/images.aeonmedia.co\/user_image_upload\/1239\/insert-Fig.-1,-black-hole,-Messier-87.jpg?width=3840&amp;quality=75&amp;format=auto\" alt=\"Photo of the first image of a black hole with a dark centre surrounded by a glowing, uneven ring of orange, yellow and red.\" width=\"600\" height=\"385\" \/><\/p>\n<p><em>The new image of the black hole in the Messier 87 galaxy. L. Medeiros (Institute for Advanced Study), D. Psaltis (Georgia Tech), T. Lauer (NSF\u2019s NOIRLab), and F. Ozel (Georgia Tech).<br \/>\n<a href=\"https:\/\/www.smithsonianmag.com\/smart-news\/see-the-sharp-new-image-of-a-supermassive-black-hole-180981990\/\">Source<\/a> <\/em><\/p>\n<p>What the image shows is the \u2018photon ring\u2019 that surrounds the gravitational mass of the\u00a0 black hole. The photon ring is a boundary layer, the last gasp of light as it is dragged into the black hole (yes, that\u2019s the void in the middle of the ring that we cannot actually see).<\/p>\n<p>Interesting detail: the photon ring is brighter towards the bottom of the image because the ring is spinning mind-bogglingly fast and where the ring is brighter is the result of the Doppler effect \u2013 the brighter part of the ring is spinning towards us (\u2026well, that\u2019s the\u00a0 hypothesis anyway!)<\/p>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Sagittarius_A*\">Even more beautiful is the black hole at the centre of our own galaxy: Sagittarius A*<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our beginning and our end \u2026 The new image of the black hole in the Messier 87 galaxy. L. Medeiros (Institute for Advanced Study), D. Psaltis (Georgia Tech), T. Lauer (NSF\u2019s NOIRLab), and F. Ozel (Georgia Tech). Source What the image shows is the \u2018photon ring\u2019 that surrounds the gravitational mass of the\u00a0 black hole. &hellip; <a href=\"https:\/\/brevities.harddfan.net\/blog\/uncategorized\/creative-destruction\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Creative Destruction&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"webmentions_disabled_pings":false,"webmentions_disabled":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"federated","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[20,1],"tags":[],"class_list":["post-411","post","type-post","status-publish","format-standard","hentry","category-cosmology","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/posts\/411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/comments?post=411"}],"version-history":[{"count":7,"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/posts\/411\/revisions"}],"predecessor-version":[{"id":423,"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/posts\/411\/revisions\/423"}],"wp:attachment":[{"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/media?parent=411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/categories?post=411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/brevities.harddfan.net\/blog\/wp-json\/wp\/v2\/tags?post=411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}