{"id":669645,"date":"2026-01-04T07:56:03","date_gmt":"2026-01-04T07:56:03","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=669645"},"modified":"2026-01-04T07:56:03","modified_gmt":"2026-01-04T07:56:03","slug":"telescopul-spatial-james-webb-descopera-o-gaura-neagra-care-pune-sub-semnul-intrebarii-teoriile-cosmice","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=669645","title":{"rendered":"Telescopul spa\u021bial James Webb descoper\u0103 o gaur\u0103 neagr\u0103 care pune sub semnul \u00eentreb\u0103rii teoriile cosmice"},"content":{"rendered":"
<\/div>\n

Astronomii care folosesc Telescopul Spa\u021bial James Webb au identificat o gaur\u0103 neagr\u0103 masiv\u0103 care pare s\u0103 contrazic\u0103 teoriile consacrate despre evolu\u021bia cosmic\u0103, scrie InterestingEngineering<\/a><\/span>.<\/p>\n

Obiectul, cu o mas\u0103 de aproximativ 50 de milioane de ori mai mare dec\u00e2t cea a Soarelui, se afl\u0103 \u00eentr-o galaxie cu un num\u0103r surprinz\u0103tor de mic de stele, suger\u00e2nd c\u0103 g\u0103urile negre nu se formeaz\u0103 \u00eentotdeauna dup\u0103 apari\u021bia galaxiilor.<\/p>\n

O gaur\u0103 neagr\u0103 care nu ar trebui s\u0103 existe<\/h2>\n

Gaura neagr\u0103 a fost detectat\u0103 \u00eentr-o galaxie \u00eendep\u0103rtat\u0103 numit\u0103 Abell 2744-QSO1, observat\u0103 la doar 700 de milioane de ani dup\u0103 Big Bang.<\/p>\n

Potrivit modelelor conven\u021bionale, g\u0103urile negre cresc treptat \u00een interiorul galaxiilor bogate \u00een stele, alimentate de gaz \u0219i resturi stelare pe perioade \u00eendelungate.<\/p>\n

\u00cens\u0103 QSO1 con\u021bine foarte pu\u021bin\u0103 mas\u0103 stelar\u0103, ceea ce \u00eei las\u0103 pe astronomi f\u0103r\u0103 o explica\u021bie clar\u0103 despre cum s-a putut forma at\u00e2t de rapid o gaur\u0103 neagr\u0103 at\u00e2t de mare.<\/p>\n

Cercet\u0103torii spun c\u0103 obiectul pare s\u0103 fi crescut masiv f\u0103r\u0103 a construi mai \u00eent\u00e2i o galaxie \u201enormal\u0103\u201d \u00een jurul s\u0103u.<\/p>\n

\u201eEste un paradox, pentru c\u0103 teoria tradi\u021bional\u0103 spune c\u0103 stelele se formeaz\u0103 primele sau \u00eempreun\u0103 cu g\u0103urile negre\u201d, a declarat Boyuan Liu, cercet\u0103tor postdoctoral la Universitatea din Cambridge \u0219i coautor al studiului.<\/p>\n

Revenirea la ideea g\u0103urilor negre primordiale<\/h2>\n

Pentru a explora acest mister, echipa de cercetare a revenit la conceptul teoretizat de mult al g\u0103urilor negre primordiale.<\/p>\n

Propuse \u00een anii 1970, aceste obiecte s-ar fi format direct din fluctua\u021bii extreme de densitate ap\u0103rute la scurt timp dup\u0103 Big Bang, nu din colapsul stelelor.<\/p>\n

Folosind simul\u0103ri avansate, oamenii de \u0219tiin\u021b\u0103 au testat dac\u0103 o gaur\u0103 neagr\u0103 primordial\u0103 masiv\u0103 ar putea cre\u0219te rapid, limit\u00e2nd \u00een acela\u0219i timp formarea stelelor din apropiere.<\/p>\n

Modelele lor au urm\u0103rit fluxurile de gaz, na\u0219terea stelelor \u0219i feedback-ul generat de exploziile stelare \u00een jurul unui nucleu ini\u021bial de gaur\u0103 neagr\u0103.<\/p>\n

Un model care se potrive\u0219te observa\u021biilor<\/h2>\n

Comparate cu datele JWST, simul\u0103rile au reprodus \u00eendeaproape masa observat\u0103 a g\u0103urii negre, num\u0103rul redus de stele \u0219i compozi\u021bia chimic\u0103 a galaxiei QSO1.<\/p>\n

De\u0219i nu reprezint\u0103 o dovad\u0103 definitiv\u0103, rezultatele sugereaz\u0103 c\u0103 o origine primordial\u0103 este compatibil\u0103 cu observa\u021biile actuale.<\/p>\n

Descoperirile, publicate pe arXiv, deschid posibilitatea ca unele dintre cele mai vechi \u0219i mai mari g\u0103uri negre din Univers s\u0103 se fi format \u00eenaintea stelelor.<\/p>\n

Viitoarele observa\u021bii JWST ar putea ar\u0103ta dac\u0103 QSO1 este o excep\u021bie rar\u0103 sau dovada unui mecanism cosmic necunoscut p\u00e2n\u0103 acum.<\/p>\n","protected":false},"excerpt":{"rendered":"

Astronomii care folosesc Telescopul Spa\u021bial James Webb au identificat o gaur\u0103 neagr\u0103 masiv\u0103 care pare s\u0103 contrazic\u0103 teoriile consacrate despre evolu\u021bia cosmic\u0103, scrie InterestingEngineering. Obiectul, cu o mas\u0103 de aproximativ … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":669646,"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\/669645"}],"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=669645"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/669645\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/669646"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=669645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=669645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=669645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}