{"id":20403,"date":"2023-09-01T12:08:00","date_gmt":"2023-09-01T12:08:00","guid":{"rendered":"https:\/\/dekkbi.com\/?p=20403"},"modified":"2023-09-01T12:08:01","modified_gmt":"2023-09-01T12:08:01","slug":"le-deplacement-des-trous-noirs-pourrait-approcher-10-de-la-vitesse-de-la-lumiere","status":"publish","type":"post","link":"https:\/\/dekkbi.com\/?p=20403","title":{"rendered":"Le d\u00e9placement des trous noirs pourrait approcher 10% de la vitesse de la lumi\u00e8re"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Publi\u00e9 par Adrien le 01\/09\/2023 \u00e0 08:00<br><strong>Source:<\/strong>\u00a0Physical Review Letters (2023)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Des astrophysiciens ont d\u00e9couvert, gr\u00e2ce \u00e0 des simulations, que certains trous noirs pourraient se d\u00e9placer dans l&rsquo;espace \u00e0 pr\u00e8s d&rsquo;un dixi\u00e8me de la vitesse de la lumi\u00e8re. Ces d\u00e9couvertes sugg\u00e8rent qu&rsquo;apr\u00e8s une collision, les trous noirs fusionn\u00e9s pourraient atteindre des vitesses incroyables.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">es \u00e9tudes ant\u00e9rieures ont d\u00e9montr\u00e9 que deux trous noirs peuvent se percuter et fusionner. Lorsqu&rsquo;ils fusionnent, ils g\u00e9n\u00e8rent des ondes gravitationnelles. Un\u00a0d\u00e9placement\u00a0peut alors survenir dans la direction oppos\u00e9e, semblable au recul d&rsquo;une arme \u00e0\u00a0feu. L&rsquo;\u00e9nergie\u00a0de ce recul peut propulser\u00a0le trou noir r\u00e9sultant\u00a0\u00e0 de tr\u00e8s grandes vitesses.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Des recherches pr\u00e9c\u00e9dentes avaient sugg\u00e9r\u00e9 que de tels trous noirs pourraient atteindre des vitesses maximales d&rsquo;environ 5 000 km\/s. Mais James Healy et Carlos Lousto ont voulu en savoir plus.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><img loading=\"lazy\" decoding=\"async\" width=\"870\" height=\"629\" src=\"https:\/\/www.techno-science.net\/illustration\/Libre\/2023\/08\/27\/simulations-suggests-s.jpg\" alt=\"\"><br><em>Affichage de la\u00a0vitesse\u00a0maximale vs. \u03b3v et\u00a0spin\u00a0pour les trous noirs en\u00a0fusion.<br>Cr\u00e9dit: Physical Review Letters<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Avec des simulations sur superordinateur, ils ont \u00e9tudi\u00e9 l&rsquo;angle\u00a0d&rsquo;approche des deux trous noirs avant la fusion. Les r\u00e9sultats de ces simulations, prenant en compte 1 300 angles d&rsquo;approche diff\u00e9rents, ont montr\u00e9 que dans le cas\u00a0id\u00e9al, lors de collisions affleurantes, le recul pourrait propulser le\u00a0trou noir\u00a0fusionn\u00e9 \u00e0 environ 28 500 km\/s. \u00c0 cette vitesse, il pourrait couvrir la distance entre la\u00a0Terre\u00a0et la\u00a0Lune\u00a0en seulement 13 secondes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Publi\u00e9 par Adrien le 01\/09\/2023 \u00e0 08:00Source:\u00a0Physical Review Letters (2023) Des astrophysiciens ont d\u00e9couvert, gr\u00e2ce \u00e0 des simulations, que certains<\/p>\n","protected":false},"author":1,"featured_media":20404,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-20403","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologie"],"_links":{"self":[{"href":"https:\/\/dekkbi.com\/index.php?rest_route=\/wp\/v2\/posts\/20403","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dekkbi.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dekkbi.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dekkbi.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dekkbi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20403"}],"version-history":[{"count":1,"href":"https:\/\/dekkbi.com\/index.php?rest_route=\/wp\/v2\/posts\/20403\/revisions"}],"predecessor-version":[{"id":20405,"href":"https:\/\/dekkbi.com\/index.php?rest_route=\/wp\/v2\/posts\/20403\/revisions\/20405"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dekkbi.com\/index.php?rest_route=\/wp\/v2\/media\/20404"}],"wp:attachment":[{"href":"https:\/\/dekkbi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dekkbi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dekkbi.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}