{"id":666097,"date":"2025-12-13T14:26:04","date_gmt":"2025-12-13T14:26:04","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=666097"},"modified":"2025-12-13T14:26:04","modified_gmt":"2025-12-13T14:26:04","slug":"astronomii-surprind-o-gaura-neagra-care-deformeaza-structura-spatiu-timp-conform-predictiilor-lui-einstein","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=666097","title":{"rendered":"Astronomii surprind o gaur\u0103 neagr\u0103 care deformeaz\u0103 structura spa\u021biu-timp, conform predic\u021biilor lui Einstein"},"content":{"rendered":"
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Astronomii au surprins un fenomen rar \u00een care o gaur\u0103 neagr\u0103 supermasiv\u0103 modific\u0103 structura spa\u021biu-timp \u00eensu\u0219i, confirm\u00e2nd o predic\u021bie veche de un secol din teoria relativit\u0103\u021bii generale a lui Albert Einstein, scrie Space<\/a><\/span>.<\/p>\n

O predic\u021bie veche de un secol, confirmat\u0103 prin distrugerea unei stele<\/h2>\n

Descoperirea, publicat\u0103 recent \u00een revista Science Advances<\/a><\/span>, se concentreaz\u0103 asupra unei stele sf\u00e2\u0219iate de o gaur\u0103 neagr\u0103 supermasiv\u0103 cu rota\u021bie rapid\u0103, gener\u00e2nd un eveniment de tip \u201etidal disruption event\u201d (TDE), cunoscut sub denumirea AT2020afhd.<\/p>\n

Oamenii de \u0219tiin\u021b\u0103 au observat oscila\u021bii \u00een orbita stelei, cauzate de un fenomen numit precesie Lense\u2013Thirring, prin care o gaur\u0103 neagr\u0103 aflat\u0103 \u00een rota\u021bie antreneaz\u0103 spa\u021biul-timp din jurul s\u0103u.<\/p>\n

Efectul a fost prezis pentru prima dat\u0103 \u00een 1918 de fizicienii Josef Lense \u0219i Hans Thirring, dar p\u00e2n\u0103 acum a fost extrem de dificil de observat direct.<\/p>\n

Observa\u021biile \u00een raze X \u0219i unde radio dezv\u0103luie o oscila\u021bie ritmic\u0103<\/h2>\n

Cercet\u0103torii au analizat date \u00een raze X furnizate de observatorul spa\u021bial Neil Gehrels Swift al NASA \u0219i semnale radio colectate de re\u021beaua Karl G. Jansky Very Large Array.<\/p>\n

Ace\u0219tia au detectat fluctua\u021bii sincronizate \u00een emisiile X \u0219i radio, care se repet\u0103 la fiecare 20 de zile terestre, indic\u00e2nd faptul c\u0103 at\u00e2t discul de acre\u021bie (fenomen prin care un corp ceresc capteaz\u0103 materie din spa\u021biul cosmic), c\u00e2t \u0219i jetul asociat se mi\u0219c\u0103 oscilatoriu \u00een acela\u0219i ritm.<\/p>\n

Aceast\u0103 mi\u0219care coordonat\u0103 a oferit dovezi solide c\u0103 varia\u021biile observate sunt cauzate de efectul de \u201eframe-dragging\u201d (efectul de \u201etragere\u201d a spa\u021biului-timp), nu de schimb\u0103ri \u00een energia emis\u0103.<\/p>\n

Perspective noi asupra rota\u021biei g\u0103urilor negre \u0219i gravita\u021biei extreme<\/h2>\n

\u00cen timpul acestor evenimente, materialul stelar formeaz\u0103 un disc de acre\u021bie \u00een jurul g\u0103urii negre, iar o parte din materie este expulzat\u0103 sub form\u0103 de jeturi extrem de puternice, apropiate de viteza luminii.<\/p>\n

Deoarece aceste structuri se afl\u0103 foarte aproape de gaura neagr\u0103, mi\u0219carea lor este puternic influen\u021bat\u0103 de efecte relativiste prev\u0103zute de teoria lui Einstein, observabile doar \u00een astfel de condi\u021bii extreme, precum deformarea spa\u021biului-timp.<\/p>\n

Oamenii de \u0219tiin\u021b\u0103 afirm\u0103 c\u0103 aceast\u0103 observa\u021bie ofer\u0103 o metod\u0103 nou\u0103 de a m\u0103sura rota\u021bia g\u0103urilor negre \u0219i de a \u00een\u021belege mai bine modul \u00een care aceste obiecte cosmice se hr\u0103nesc \u0219i genereaz\u0103 jeturi.<\/p>\n","protected":false},"excerpt":{"rendered":"

Astronomii au surprins un fenomen rar \u00een care o gaur\u0103 neagr\u0103 supermasiv\u0103 modific\u0103 structura spa\u021biu-timp \u00eensu\u0219i, confirm\u00e2nd o predic\u021bie veche de un secol din teoria relativit\u0103\u021bii generale a lui Albert … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":666098,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/666097"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=666097"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/666097\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/666098"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=666097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=666097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=666097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}