{"id":75998,"date":"2021-08-20T23:56:46","date_gmt":"2021-08-20T20:56:46","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=75998"},"modified":"2021-08-20T23:56:46","modified_gmt":"2021-08-20T20:56:46","slug":"ar-putea-extraterestrii-sa-construiasca-imense-sfere-dyson-care-inconjoara-gaurile-negre-pentru-a-extrage-de-acolo-energie","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/ar-putea-extraterestrii-sa-construiasca-imense-sfere-dyson-care-inconjoara-gaurile-negre-pentru-a-extrage-de-acolo-energie\/","title":{"rendered":"Ar putea extratere\u015ftrii s\u0103 construiasc\u0103 imense Sfere Dyson care \u00eenconjoar\u0103 g\u0103urile negre, pentru a extrage de acolo energie?"},"content":{"rendered":"<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2021\/08\/sfera-Dyson.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-75999\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2021\/08\/sfera-Dyson.jpg\" alt=\"\" width=\"340\" height=\"201\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2021\/08\/sfera-Dyson.jpg 340w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2021\/08\/sfera-Dyson-300x177.jpg 300w\" sizes=\"auto, (max-width: 340px) 100vw, 340px\" \/><\/a>Sferele Dyson ce \u00eenconjoar\u0103 g\u0103urile negre ar putea produce p\u00e2n\u0103 la un milion de ori mai mult\u0103 energie dec\u00e2t cele construite \u00een jurul stelelor, potrivit unui nou studiu.<\/p>\n<p>Unul dintre cele mai mari mistere cu care se confrunt\u0103 omenirea este acela legat de \u00eentrebarea dac\u0103 suntem singuri \u00een Univers. Se fac multe eforturi pentru a r\u0103spunde la aceast\u0103 \u00eentrebare, de la \u00eencerc\u0103ri de a g\u0103si urme de microbi pe Marte, p\u00e2n\u0103 la specula\u021bii despre urmele tehnologice pe care civiliza\u021biile extraterestre avansate le-ar putea produce \u00een Cosmos.<\/p>\n<p>Acum, cercet\u0103torii condu\u0219i de Tiger Yu-Yang Hsiao, astronom la Universitatea Na\u021bional\u0103 Tsing Hua din Taiwan, au venit cu o nou\u0103 idee pentru a ajuta la c\u0103utarea inteligen\u021bei extraterestre: c\u0103utarea semnelor sferelor Dyson, un tip de megastructur\u0103 extraterestr\u0103 ipotetic\u0103, \u00een jurul g\u0103urilor negre.<\/p>\n<p>Sferele Dyson sunt de obicei vizualizate ca ni\u015fte centrale electrice avansate care \u00eenconjoar\u0103 stelele \u0219i \u00ee\u0219i recolteaz\u0103 de acolo energia imens\u0103, \u00eentr-un anumit scop, de exemplu pentru a alimenta un computer extrem de puternic. Dar noua ipotez\u0103 propus\u0103 de Hsiao \u0219i colegii s\u0103i propune o sfer\u0103 Dyson invers\u0103 (interior \/ IDS), care se hr\u0103ne\u0219te cu puterea unei g\u0103uri negre, conform unui studiu recent publicat \u00een <strong><em>&#8222;Monthly Notices of the Royal Astronomical Society&#8221;<\/em><\/strong>.<\/p>\n<p><em>&#8222;\u00cen general, o gaur\u0103 neagr\u0103 poate fi o surs\u0103 promi\u021b\u0103toare \u0219i este mai eficient\u0103 dec\u00e2t ob\u0163inerea energiei de la o stea\u201d<\/em>, se spune \u00een studiu, men\u021bion\u00e2ndu-se faptul c\u0103 g\u0103urile negre ar putea produce de p\u00e2n\u0103 la un milion de ori mai mult\u0103 energie dec\u00e2t energia stelelor vii. Cercet\u0103torii au ad\u0103ugat, de asemenea, c\u0103 o c\u0103ldur\u0103 rezidual\u0103 de la un IDS ar putea fi detectat\u0103 de telescoapele noastre actuale, inclusiv de telescopul spa\u021bial Hubble.<\/p>\n<p>Ideea ob\u0163inerii de energie din obiecte cere\u015fti care absorb lumina (de aici \u015fi denumirea de &#8222;gaur\u0103 neagr\u0103&#8221;) poate p\u0103rea absurd\u0103. Nimic care trece dincolo de orizontul evenimentelor unei g\u0103uri negre nu poate sc\u0103pa, inclusiv lumina, f\u0103c\u00e2nd ca aceste obiecte s\u0103 fie invizibile telescoapelor. Cu toate acestea, interac\u021biunile care apar chiar \u00een afara orizontului evenimentelor pot produce unele dintre cele mai explozive \u0219i radiante spectacole de lumin\u0103 din Univers. De exemplu, materialul gazos care cade \u00een ghearele gravita\u021bionale ale unei g\u0103uri negre tinde s\u0103 se adune \u00eentr-un disc care \u00eenconjoar\u0103 orizontul evenimentelor, \u00eenc\u0103lzindu-se p\u00e2n\u0103 la temperaturi extreme. Uneori, se formeaz\u0103 o &#8222;coroan\u0103&#8221; foarte fierbinte \u00een centrul acestor discuri, materialul ajung\u00e2nd \u00eenapoi \u00een spa\u021biul cosmic, sub form\u0103 de jeturi de plasm\u0103 care se deplaseaz\u0103 cu o vitez\u0103 apropiat\u0103 vitezei luminii.<\/p>\n<p>Hsiao \u0219i colegii s\u0103i au modelat pe calculator randamentele poten\u021biale de energie pe care un IDS le-ar putea avea. Cercet\u0103torii au luat \u00een considerare \u0219i imensa mas\u0103 a acestor obiecte, imagin\u00e2ndu-se structuri de IDS \u00een jurul unor g\u0103uri negre cu o mas\u0103 stelar\u0103 de 5 &#8211; 20 de ori mai mari dec\u00e2t Soarele, sau g\u0103urile negre supermasive, precum cea din centrul C\u0103ii Lactee, care con\u021bine patru milioane de mase solare.<\/p>\n<p>G\u0103urile negre sunt obiecte periculoase \u0219i volatile, iar autorii arat\u0103 clar c\u0103 construirea unui IDS ar fi o provocare semnificativ\u0103 pentru proiectan\u0163ii extratere\u015ftri. Nu exist\u0103 niciun metal cunoscut care s\u0103 reziste la temperaturile ridicate ale discurilor \u0219i jeturilor din jurul g\u0103urilor negre, astfel \u00eenc\u00e2t civiliza\u021biile extraterestre ar trebui s\u0103 foloseasc\u0103 tehnologii extrem de avansate, pentru a culege energie din aceste obiecte cere\u015fti.<\/p>\n<p><em><strong>Sursa<\/strong><\/em> (traducerea \u015fi adaptarea proprie): studiul <a href=\"https:\/\/academic.oup.com\/mnras\/article-abstract\/506\/2\/1723\/6312510\" target=\"_blank\" rel=\"noopener\"><strong>&#8222;A Dyson sphere around a black hole&#8221; \/ academic.oup.com<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sferele Dyson ce \u00eenconjoar\u0103 g\u0103urile negre ar putea produce p\u00e2n\u0103 la un milion de ori mai mult\u0103 energie dec\u00e2t cele construite \u00een jurul stelelor, potrivit unui nou studiu. Unul dintre cele mai mari mistere cu care se confrunt\u0103 omenirea este &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Ar putea extratere\u015ftrii s\u0103 construiasc\u0103 imense Sfere Dyson care \u00eenconjoar\u0103 g\u0103urile negre, pentru a extrage de acolo energie?\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/ar-putea-extraterestrii-sa-construiasca-imense-sfere-dyson-care-inconjoara-gaurile-negre-pentru-a-extrage-de-acolo-energie\/#more-75998\" aria-label=\"Cite\u0219te mai multe despre Ar putea extratere\u015ftrii s\u0103 construiasc\u0103 imense Sfere Dyson care \u00eenconjoar\u0103 g\u0103urile negre, pentru a extrage de acolo energie?\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":75999,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11039],"tags":[3063,102,902,2671,1405,66,51,433,596,952,156,4447,1191,2364,11980,865,733,2855,434,5025,2358,1087,2250,2916],"class_list":["post-75998","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomie","tag-astronom","tag-astronomie","tag-calculator","tag-caldura","tag-calea-lactee","tag-energie","tag-extraterestri","tag-galaxie","tag-gaura-neagra","tag-lumina","tag-marte","tag-metal","tag-microbi","tag-revista","tag-sfera-dyson","tag-soare","tag-stea","tag-taiwan","tag-telescop","tag-telescopul-hubble","tag-temperatura","tag-univers","tag-universitate","tag-viteza-luminii","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ar putea extratere\u015ftrii s\u0103 construiasc\u0103 imense Sfere Dyson care \u00eenconjoar\u0103 g\u0103urile negre, pentru a extrage de acolo energie? - Secretele lui Lovendal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lovendal.ro\/wp52\/ar-putea-extraterestrii-sa-construiasca-imense-sfere-dyson-care-inconjoara-gaurile-negre-pentru-a-extrage-de-acolo-energie\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ar putea extratere\u015ftrii s\u0103 construiasc\u0103 imense Sfere Dyson care \u00eenconjoar\u0103 g\u0103urile negre, pentru a extrage de acolo energie?\" \/>\n<meta property=\"og:description\" content=\"Sferele Dyson ce \u00eenconjoar\u0103 g\u0103urile negre ar putea produce p\u00e2n\u0103 la un milion de ori mai mult\u0103 energie dec\u00e2t cele construite \u00een jurul stelelor, potrivit unui nou studiu. 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