{"id":1878,"date":"2025-09-22T10:18:07","date_gmt":"2025-09-22T10:18:07","guid":{"rendered":"https:\/\/www.europesays.com\/ee\/1878\/"},"modified":"2025-09-22T10:18:07","modified_gmt":"2025-09-22T10:18:07","slug":"teadlased-desifreerisid-raadiosignaali-andmed-mis-randas-kumme-miljardit-aastat-labi-universumi","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ee\/1878\/","title":{"rendered":"Teadlased de\u0161ifreerisid raadiosignaali andmed, mis r\u00e4ndas k\u00fcmme miljardit aastat l\u00e4bi Universumi"},"content":{"rendered":"<p>2024. aasta m\u00e4rtsis j\u00f5udis Maale signaal, mis oli teel umbes 10 miljardit aastat. Portaal <a rel=\"noopener nofollow\" href=\"http:\/\/earth.com\" target=\"_blank\">earth.com<\/a> kirjutab, et astronoomid nimetavad seda kiireks raadiopurskeks (fast radio burst, FRB), konkreetsemalt FRB 20240304B, kuna see kestis vaid m\u00f5ne tuhandiku sekundi, kuid p\u00e4\u00e4stis valla energiahulga, mis v\u00f5rdub P\u00e4ikese mitmep\u00e4evase kiirgusega.<\/p>\n<p>Purske tuvastas L\u00f5una-Aafrikas asuv MeerKATi raadioteleskoop ning selle p\u00e4ritolugalaktika kinnitati James Webbi kosmoseteleskoobi abil. Taolised pursked on teadlastele v\u00e4\u00e4rtuslikud, kuna nad kannavad endas infot aine ja magnetv\u00e4ljade kohta, mida nad teel olles l\u00e4binud on. Iga purske signaal sisaldab justkui j\u00e4lge universumis leiduvast ioniseeritud gaasist ehk plasmast, mille l\u00e4bi ta levis ja see v\u00f5imaldab hinnata n\u00e4htava aine jaotust kosmoses ja magnetv\u00e4ljade paigutust.<\/p>\n<p>Purske allikaks peetakse magnetare ning noorte t\u00e4htede plahvatustest j\u00e4rele j\u00e4\u00e4nud \u00fclimalt tihedaid objekte, millel on erakordselt tugev magnetv\u00e4li. FRB 20240304B spektri anal\u00fc\u00fcs n\u00e4itas, et selle punanihke (astronoomias on see n\u00e4htus, kus kaugelt saabuva valguse lainepikkus nihkub punase (pikema lainepikkuse) suunas &#8211; toim.) p\u00f5hjal tekkis purske allikas ajal, mil universum oli vaid umbes 3 miljardit aastat vana ehk perioodil, mida teadlased kutsuvad \u201ekosmiliseks l\u00f5unaks\u201c, mil t\u00e4heteke oli ajaloos k\u00f5ige aktiivsem.<\/p>\n<p>Uuringu viis l\u00e4bi rahvusvaheline teadlaste r\u00fchm, mida juhtis Manisha Caleb Sydney \u00fclikoolist. Nad j\u00f5udsid j\u00e4reldusele, et isegi v\u00e4ikesed, aga aktiivse t\u00e4hetekkega galaktikad v\u00f5ivad sisaldada v\u00e4ga v\u00f5imsaid raadiokiirguse allikaid, mis avab uusi v\u00f5imalusi universumi uurimiseks ja kaardistamiseks. Uuringuga saab tutvuda <a rel=\"noopener follow nofollow\" target=\"_blank\" href=\"https:\/\/arxiv.org\/abs\/2508.01648\" data-rel-date-range=\"[]\">SIIN<\/a>.<\/p>\n<p>    Kuidas see lugu Sind end tundma pani?<br \/>\n        Saada<br \/>\n           <a href=\"https:\/\/forte.delfi.ee\/artikkel\/120405306\/teadlased-desifreerisid-raadiosignaali-andmed-mis-randas-kumme-miljardit-aastat-labi-universumi\/kommentaarid\" class=\"article-body-bottom__comment article-body-bottom__comment--write button button--primary button--size-auto\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n        Kommenteeri<br \/>\n       <\/a> <a href=\"https:\/\/forte.delfi.ee\/artikkel\/120405306\/teadlased-desifreerisid-raadiosignaali-andmed-mis-randas-kumme-miljardit-aastat-labi-universumi\/kommentaarid\" class=\"article-body-bottom__comment article-body-bottom__comment--read button button--size-auto\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n        Loe kommentaare  <\/a>  <\/p>\n","protected":false},"excerpt":{"rendered":"2024. aasta m\u00e4rtsis j\u00f5udis Maale signaal, mis oli teel umbes 10 miljardit aastat. Portaal earth.com kirjutab, et astronoomid&hellip;\n","protected":false},"author":2,"featured_media":1879,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[26,27,37,33,35,34,36,31,32,21,287,28,29,95,19,25,23,24,22,20,30,92,93,94],"class_list":{"0":"post-1878","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-maailm","8":"tag-breaking-news","9":"tag-breakingnews","10":"tag-ee","11":"tag-eesti","12":"tag-eesti-keel","13":"tag-estonia","14":"tag-estonian","15":"tag-featured-news","16":"tag-featurednews","17":"tag-headlines","18":"tag-kosmos","19":"tag-latest-news","20":"tag-latestnews","21":"tag-maailm","22":"tag-news","23":"tag-populaarseimad-lood","24":"tag-top-stories","25":"tag-topstories","26":"tag-uldised-uudised","27":"tag-uudised","28":"tag-viimased-uudised","29":"tag-world","30":"tag-world-news","31":"tag-worldnews"},"share_on_mastodon":{"url":"","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/1878","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/comments?post=1878"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/1878\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media\/1879"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media?parent=1878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/categories?post=1878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/tags?post=1878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}