{"id":91719,"date":"2019-06-06T17:03:58","date_gmt":"2019-06-07T00:03:58","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2019\/06\/black-hole-propulsion-as-technosignature"},"modified":"2019-06-06T17:03:58","modified_gmt":"2019-06-07T00:03:58","slug":"black-hole-propulsion-as-technosignature","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2019\/06\/black-hole-propulsion-as-technosignature","title":{"rendered":"Black Hole Propulsion as Technosignature"},"content":{"rendered":"<p style=\"padding-right: 20px\"><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/black-hole-propulsion-as-technosignature.jpg\"><\/a><\/p>\n<p>When he was considering white dwarfs and neutron stars in the context of what he called \u2018gravitational machines,\u2019 Freeman Dyson became intrigued by the fate of a neutron star binary. He calculated in his paper of the same name (citation below) that gradual loss of energy through gravitational radiation would bring the two neutron stars together, creating a gravitational wave event of the sort that has since been observed. Long before LIGO, Dyson was talking about gravitational wave detection instruments that could track the \u2018gravitational flash.\u2019<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"display:none;\" src=\"https:\/\/lifeboat.com\/blog.images\/black-hole-propulsion-as-technosignature.jpg\" alt=\"\" width=\"540\" height=\"303\" class=\"aligncenter\" srcset=\"https:\/\/lifeboat.com\/blog.images\/black-hole-propulsion-as-technosignature.jpg 540w, https:\/\/www.centauri-dreams.org\/wp-content\/uploads\/2019\/03\/Colliding-Neutron-Stars-Produce-Gold-300x168.jpg 300w\" sizes=\"auto, (max-width: 540px)  100vw, 540px\" \/><\/p>\n<p><strong>Image<\/strong>: Artist conception of the moment two neutron stars collide. Credit: LIGO \/ Caltech \/ MIT.<\/p>\n<p><a href=\"https:\/\/www.centauri-dreams.org\/2019\/03\/06\/black-hole-propulsion-as-technosignature\/\" target=\"_blank\" rel=\"noopener noreferrer\"><\/p>\n<div style=\"clear:both;\">Read more<\/div>\n<p><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>When he was considering white dwarfs and neutron stars in the context of what he called \u2018gravitational machines,\u2019 Freeman Dyson became intrigued by the fate of a neutron star binary. He calculated in his paper of the same name (citation below) that gradual loss of energy through gravitational radiation would bring the two neutron stars [\u2026]<\/p>\n","protected":false},"author":513,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,219],"tags":[],"class_list":["post-91719","post","type-post","status-publish","format-standard","hentry","category-cosmology","category-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/91719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/513"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=91719"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/91719\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=91719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=91719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=91719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}