{"id":4542,"date":"2019-09-08T16:31:34","date_gmt":"2019-09-08T14:31:34","guid":{"rendered":"https:\/\/www.oa-cagliari.inaf.it\/seminari\/la-prima-immagine-di-un-buco-nero-con-il-telescopio-event-horizon\/"},"modified":"2025-09-22T23:02:43","modified_gmt":"2025-09-22T21:02:43","slug":"la-prima-immagine-di-un-buco-nero-con-il-telescopio-event-horizon","status":"publish","type":"seminari","link":"https:\/\/www.oa-cagliari.inaf.it\/en\/seminars\/la-prima-immagine-di-un-buco-nero-con-il-telescopio-event-horizon\/","title":{"rendered":"The first image of a black hole with the Event Horizon Telescope"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1616\" src=\"https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/2019042915494407929-300x167.png\" alt=\"\" width=\"300\" height=\"167\" srcset=\"https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/2019042915494407929-300x167.png 300w, https:\/\/www.oa-cagliari.inaf.it\/wp-content\/uploads\/2025\/09\/2019042915494407929.png 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>One of the most extreme and elusive consequences of Einstein\u2019s general theory of relativity is the existence of black holes.<br \/>\nThe Event Horizon Telescope collaboration has recently released the first image of a black hole in the center of the M87 galaxy in the Virgo cluster. The image shows a bright ring revealing the curvature of space-time due to the extreme gravitational field around a black hole 6.5 billion times more massive than the Sun. The ring encloses a dark region at its center, the so-called black hole \u2018shadow\u2019, which is the signature of an event horizon, the defining feature of a black hole. Overall, the observed image is consistent with expectations for the shadow of a Kerr black hole as predicted by general relativity and provides the strongest evidence to date of the existence of supermassive black holes.<br \/>\nIn the seminar, I will describe the context, the implications and the \u201cbehind the scenes\u201d of one of the greatest discovery of the year.<\/p>\n","protected":false},"template":"","class_list":["post-4542","seminari","type-seminari","status-publish","hentry","categorie_seminari-colloquium"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/seminari\/4542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/seminari"}],"about":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/types\/seminari"}],"wp:attachment":[{"href":"https:\/\/www.oa-cagliari.inaf.it\/en\/wp-json\/wp\/v2\/media?parent=4542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}