{"id":103504,"date":"2026-09-27T20:07:09","date_gmt":"2026-09-27T17:07:09","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=103504"},"modified":"2026-09-27T20:07:09","modified_gmt":"2026-09-27T17:07:09","slug":"astronomii-au-detectat-pentru-prima-data-semnale-radio-provenite-direct-de-la-o-exoplaneta-beta-pictoris-b-aflata-la-634-ani-lumina-distanta","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/astronomii-au-detectat-pentru-prima-data-semnale-radio-provenite-direct-de-la-o-exoplaneta-beta-pictoris-b-aflata-la-634-ani-lumina-distanta\/","title":{"rendered":"Astronomii au detectat pentru prima dat\u0103 semnale radio provenite direct de la o exoplanet\u0103 &#8211; Beta Pictoris b, aflat\u0103 la 63,4 ani-lumin\u0103 distan\u0163\u0103"},"content":{"rendered":"<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2026\/09\/EXOPLANETA_cleanup.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-103505\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2026\/09\/EXOPLANETA_cleanup.jpg\" alt=\"\" width=\"368\" height=\"201\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2026\/09\/EXOPLANETA_cleanup.jpg 368w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2026\/09\/EXOPLANETA_cleanup-300x164.jpg 300w\" sizes=\"auto, (max-width: 368px) 100vw, 368px\" \/><\/a>Nu exist\u0103 \u00eenc\u0103 dovezi ale existen\u021bei altei vie\u021bi dincolo de P\u0103m\u00e2nt, dar oamenii de \u0219tiin\u021b\u0103 sunt \u00een permanen\u021b\u0103 \u00een c\u0103utarea unor semne care arat\u0103 c\u0103 nu suntem singuri \u00een Univers. Acum, o echip\u0103 de la Centrul de Astrofizic\u0103 Harvard &amp; Smithsonian \u0219i de la Universitatea din Oregon (SUA) a anun\u021bat o premier\u0103 important\u0103: un semnal radio provenit direct de la o exoplanet\u0103 (o planet\u0103 din afara sistemului solar). Anterior, detec\u021biile radio din sistemele care g\u0103zduiesc planete nu puteau fi localizate \u00een mod neechivoc la nivelul planetelor, ci doar la stelele \u00een jurul c\u0103rora acestea se \u00eenv\u00e2rt.<\/p>\n<p>Totu\u0219i, \u00een cazul acesta nu este vorba de extratere\u0219tri care \u00eencearc\u0103 s\u0103 ia leg\u0103tura. Este semnalul provenit de la aurorele exoplanetei, creat de particulele \u00eenc\u0103rcate care interac\u021bioneaz\u0103 cu condi\u021biile atmosferice \u0219i ale c\u00e2mpului magnetic pentru a elibera energie. \u0218i P\u0103m\u00e2ntul are aurore, care se manifest\u0103 ca aurorele boreale \u0219i australe. \u00cen cazul exoplanetei \u00een cauz\u0103, au fost detectate explozii rapide, recurente \u0219i cu polarizare circular\u0103 ridicat\u0103, precum \u0219i emisii persistente, la frecven\u021be de la 0,85 la 3,5 GHz. Acestea sunt frecven\u021bele pe care cercet\u0103torii le-au acoperit folosind re\u021beaua de radiotelescoape <strong>MeerKAT<\/strong> din Africa de Sud, \u00een patru ocazii diferite \u00een 2025 \u0219i 2026.<\/p>\n<p>Aten\u021bia telescopului a fost \u00eendreptat\u0103 spre steaua <strong>Beta Pictoris<\/strong>, aflat\u0103 la aproximativ 63,4 ani-lumin\u0103 distan\u021b\u0103, \u00een jurul c\u0103reia se afl\u0103 trei planete cunoscute: Beta Pictoris b, Beta Pictoris c \u0219i Beta Pictoris d. Observa\u021biile au eviden\u021biat explozii radio scurte, repetitive, cu unde radio puternic polarizate circular. Aceasta este o semn\u0103tur\u0103 clasic\u0103 a semnalelor emise de aurore. Cercet\u0103torii au putut stabili cu un grad ridicat de certitudine c\u0103 era planeta <strong>Beta Pictoris b<\/strong>, \u0219i nu steaua Beta Pictoris, cea care emitea emisiile.<\/p>\n<p>Beta Pictoris este o stea mai b\u0103tr\u00e2n\u0103, ceea ce \u00eenseamn\u0103 c\u0103 este mai fierbinte, mai mare \u0219i are o structur\u0103 diferit\u0103 de stelele precum Soarele nostru. Se pare c\u0103 exoplaneta Beta Pictoris b are un c\u00e2mp magnetic deosebit de puternic, ceea ce se potrive\u0219te cu model\u0103rile anterioare ale planetei \u0219i ale dinamului s\u0103u (procesele interne care genereaz\u0103 c\u00e2mpul magnetic). Cercet\u0103torii au calculat c\u0103 exoplaneta are un c\u00e2mp magnetic foarte puternic, de mii de ori mai puternic dec\u00e2t cel al P\u0103m\u00e2ntului, emisia sa radio fiind posibil alimentat\u0103 de rota\u021bia sa rapid\u0103 (planeta are nevoie de doar 8-9 ore pentru a se roti).<\/p>\n<p>Beta Pictoris b a fost descoperit\u0103 pentru prima dat\u0103 \u00een 2008 \u0219i este imens\u0103 &#8211; are o mas\u0103 de aproximativ 10 ori mai mare dec\u00e2t cea a lui Jupiter. Acum are \u0219i distinc\u021bia de a fi prima exoplanet\u0103 de la care am detectat un semnal radio clar. Acum, cercet\u0103torii au \u00een vedere alte planete. Mai exact, alte \u0219apte exoplanete gigantice cunoscute, situate pe cinci sisteme stelare apropiate, care ar putea fi analizate \u00een cur\u00e2nd \u00een acela\u0219i mod \u00een care a fost analizat\u0103 Beta Pictoris b.<\/p>\n<p><strong>Sursa:<\/strong> studiul \u015ftiin\u0163ific <a href=\"https:\/\/arxiv.org\/abs\/2609.16720\" target=\"_blank\" rel=\"noopener\"><strong>&#8222;Discovery of radio emission from the exoplanet <span id=\"MathJax-Element-1-Frame\" class=\"MathJax\" tabindex=\"0\"><span id=\"MathJax-Span-1\" class=\"math\"><span id=\"MathJax-Span-2\" class=\"mrow\"><span id=\"MathJax-Span-3\" class=\"texatom\"><span id=\"MathJax-Span-4\" class=\"mrow\"><span id=\"MathJax-Span-5\" class=\"mo\">\u03b2<\/span><\/span><\/span><\/span><\/span><\/span> Pictoris b&#8221; \/ arxiv.org<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nu exist\u0103 \u00eenc\u0103 dovezi ale existen\u021bei altei vie\u021bi dincolo de P\u0103m\u00e2nt, dar oamenii de \u0219tiin\u021b\u0103 sunt \u00een permanen\u021b\u0103 \u00een c\u0103utarea unor semne care arat\u0103 c\u0103 nu suntem singuri \u00een Univers. Acum, o echip\u0103 de la Centrul de Astrofizic\u0103 Harvard &amp; &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Astronomii au detectat pentru prima dat\u0103 semnale radio provenite direct de la o exoplanet\u0103 &#8211; Beta Pictoris b, aflat\u0103 la 63,4 ani-lumin\u0103 distan\u0163\u0103\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/astronomii-au-detectat-pentru-prima-data-semnale-radio-provenite-direct-de-la-o-exoplaneta-beta-pictoris-b-aflata-la-634-ani-lumina-distanta\/#more-103504\" aria-label=\"Cite\u0219te mai multe despre Astronomii au detectat pentru prima dat\u0103 semnale radio provenite direct de la o exoplanet\u0103 &#8211; Beta Pictoris b, aflat\u0103 la 63,4 ani-lumin\u0103 distan\u0163\u0103\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":103505,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11039],"tags":[1939,102,10543,20687,20688,1662,14330,66,3460,731,20689,7326,105,3221,733,23,1087,2250],"class_list":["post-103504","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomie","tag-africa-de-sud","tag-astronomie","tag-aurore","tag-beta-pictoris","tag-beta-pictoris-b","tag-camp-magnetic","tag-emisie-radio-rapida","tag-energie","tag-exoplaneta","tag-jupiter","tag-meerkat","tag-oregon","tag-pamant","tag-radiotelescop","tag-stea","tag-sua","tag-univers","tag-universitate","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Astronomii au detectat pentru prima dat\u0103 semnale radio provenite direct de la o exoplanet\u0103 - Beta Pictoris b, aflat\u0103 la 63,4 ani-lumin\u0103 distan\u0163\u0103 - 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\/astronomii-au-detectat-pentru-prima-data-semnale-radio-provenite-direct-de-la-o-exoplaneta-beta-pictoris-b-aflata-la-634-ani-lumina-distanta\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Astronomii au detectat pentru prima dat\u0103 semnale radio provenite direct de la o exoplanet\u0103 - Beta Pictoris b, aflat\u0103 la 63,4 ani-lumin\u0103 distan\u0163\u0103\" \/>\n<meta property=\"og:description\" content=\"Nu exist\u0103 \u00eenc\u0103 dovezi ale existen\u021bei altei vie\u021bi dincolo de P\u0103m\u00e2nt, dar oamenii de \u0219tiin\u021b\u0103 sunt \u00een permanen\u021b\u0103 \u00een c\u0103utarea unor semne care arat\u0103 c\u0103 nu suntem singuri \u00een Univers. 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