{"id":148901,"date":"2023-05-27T22:11:00","date_gmt":"2023-05-27T19:11:00","guid":{"rendered":"https:\/\/life.karpat.in.ua\/?p=148901"},"modified":"2023-05-27T06:27:59","modified_gmt":"2023-05-27T03:27:59","slug":"egyre-csak-ismetlodnek-a-rejtelyes-radiojelek-az-urben-a-csillagaszok-most-eszleltek-meg-25-ot","status":"publish","type":"post","link":"https:\/\/life.karpat.in.ua\/?p=148901&lang=hu","title":{"rendered":"Egyre csak ism\u00e9tl\u0151dnek a rejt\u00e9lyes r\u00e1di\u00f3jelek az \u0171rben \u2013 a csillag\u00e1szok most \u00e9szleltek m\u00e9g 25-\u00f6t"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>A kanadai CHIME r\u00e1di\u00f3teleszk\u00f3p 2019 \u00e9s 2021 k\u00f6z\u00f6tt r\u00f6gz\u00edtett adatait \u00e1tvizsg\u00e1lva arra jutottak a tud\u00f3sok, hogy sokkal t\u00f6bb lehet az ism\u00e9tl\u0151d\u0151 gyors r\u00e1di\u00f3kit\u00f6r\u00e9s a vil\u00e1g\u0171rben, mint azt eddig gondolt\u00e1k.<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"370\" src=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/05\/a382e8a9-336d-4f4e-aafe-cce141c790ab.jpg\" alt=\"\" class=\"wp-image-148902\" srcset=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/05\/a382e8a9-336d-4f4e-aafe-cce141c790ab.jpg 800w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/05\/a382e8a9-336d-4f4e-aafe-cce141c790ab-300x139.jpg 300w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/05\/a382e8a9-336d-4f4e-aafe-cce141c790ab-768x355.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">A gyors r\u00e1di\u00f3kit\u00f6r\u00e9sek (fast radio burst, FRB) napjaink tal\u00e1n legizgalmasabb kozmikus jelens\u00e9gei. Ezek a pillanatnyi esem\u00e9nyek olyan kit\u00f6r\u00e9sekb\u0151l \u00e1llnak, amelyek t\u00f6bb energi\u00e1t bocs\u00e1tanak ki a m\u00e1sodperc ezred r\u00e9sze alatt, mint a Nap h\u00e1rom nap alatt. B\u00e1r a legt\u00f6bb ilyen esem\u00e9ny val\u00f3ban csak n\u00e9h\u00e1ny ezredm\u00e1sodpercig tart, vannak olyan FRB-k, amik ism\u00e9tl\u0151dnek. A csillag\u00e1szok nem pontosan \u00e9rtik, hogy mi okozza ezeket, de az elm\u00falt \u00e9vekben egyre t\u00f6bb kutat\u00e1s sor\u00e1n kerest\u00e9k a v\u00e1laszt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Az egyik ilyen tanulm\u00e1ny elk\u00e9sz\u00edt\u00e9s\u00e9hez a Canadian Hydrogen Intensity Mapping Experiment (CHIME) nev\u0171 r\u00e1di\u00f3teleszk\u00f3p a nagy l\u00e1t\u00f3sz\u00f6g\u00e9t \u00e9s a sz\u00e9les frekvencia-elfedetts\u00e9g\u00e9t haszn\u00e1lt\u00e1k ki. A szerkezettel a mai napig t\u00f6bb mint 1000 ilyen kit\u00f6r\u00e9st detekt\u00e1ltak.<\/p>\n\n\n\n<figure class=\"wp-block-image alignwide size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"243\" src=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2023\/05\/frbs-600.gif\" alt=\"\" class=\"wp-image-148903\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A kutat\u00f3k nemr\u00e9g egy \u00faj algoritmust futtattak v\u00e9gig a CHIME \u00e1ltal 2019 \u00e9s 2021 k\u00f6z\u00f6tt r\u00f6gz\u00edtett adatokon. Ennek k\u00f6sz\u00f6nhet\u0151en siker\u00fclt 25 olyan ism\u00e9tl\u0151d\u0151 FRB-t \u00e9szlelni, amit kor\u00e1bban nem siker\u00fclt felfedezni.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ziggy Pleunis, a toront\u00f3i Dunlap Csillag\u00e1szati \u00e9s Asztrofizikai Int\u00e9zet tud\u00f3sa az Universe Todaynek \u00fagy nyilatkozott, minden egyes FRB-t az \u00e9gbolton elfoglalt helyzete \u00e9s a diszperzi\u00f3s m\u00e9rt\u00e9kek\u00e9nt (DM) ismert mennyis\u00e9ge \u00edrja le. Ez a magas \u00e9s az alacsony frekvenci\u00e1k k\u00f6z\u00f6tti id\u0151k\u00e9sleltet\u00e9sre vonatkozik, amelyet a kit\u00f6r\u00e9s anyaggal val\u00f3 k\u00f6lcs\u00f6nhat\u00e1sa okoz, mik\u00f6zben az a t\u00e9rben halad.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A m\u00f3dszer seg\u00edts\u00e9g\u00e9vel az eddig a szerkezettel detekt\u00e1lt ism\u00e9tl\u0151d\u0151 FRB-k sz\u00e1m\u00e1t siker\u00fclt majdnem megdupl\u00e1zni \u2013 29 ut\u00e1n most 25-\u00f6t tal\u00e1ltak \u2013, ezek mellett pedig tal\u00e1ltak n\u00e9h\u00e1ny \u00e9rdekes jellemz\u0151t, ami seg\u00edthet felt\u00e1rni a keletkez\u00e9s\u00fck ok\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A szakember szerint t\u00f6bb olyat is tal\u00e1ltak, ami csak ritk\u00e1n ism\u00e9tl\u0151dik, vagyis majdnem olyan, mint egy egyszeri FRB. Emiatt viszont \u00fagy v\u00e9li, nem kiz\u00e1rt, hogy minden FRB ism\u00e9tl\u0151dik, legfeljebb csak nagyon nagy id\u0151k\u00f6z\u00f6kkel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A kutat\u00f3k a j\u00f6v\u0151ben szeretn\u00e9k tov\u00e1bb vizsg\u00e1lni ezeket a r\u00e1di\u00f3kit\u00f6r\u00e9seket, hogy jobban megismerj\u00e9k a keletkez\u00e9s\u00fcket \u00e9s annak okait.<\/p>\n\n\n\n<p class=\"has-text-align-right wp-block-paragraph\"><strong><a href=\"https:\/\/hvg.hu\/tudomany\/20230526_gyors_radiokitores_frb_urkutatas_vilagur_univerzum#rss\" target=\"_blank\" rel=\"noreferrer noopener\">(hvg.hu)<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A kanadai CHIME r\u00e1di\u00f3teleszk\u00f3p 2019 \u00e9s 2021 k\u00f6z\u00f6tt r\u00f6gz\u00edtett adatait \u00e1tvizsg\u00e1lva arra jutottak a tud\u00f3sok, hogy sokkal t\u00f6bb lehet az ism\u00e9tl\u0151d\u0151 gyors r\u00e1di\u00f3kit\u00f6r\u00e9s a vil\u00e1g\u0171rben, mint azt eddig gondolt\u00e1k.<\/p>\n","protected":false},"author":12,"featured_media":148902,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,596,11,592,598,39],"tags":[587844,587843,10611],"class_list":["post-148901","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cikkek","category-erdekes","category-kiemelt-tema","category-tarsadalom","category-tudomany","category-vilag","tag-kanadai-chime-radioteleszkop","tag-radioadasok","tag-vilagur"],"_links":{"self":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/148901","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=148901"}],"version-history":[{"count":1,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/148901\/revisions"}],"predecessor-version":[{"id":148904,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/148901\/revisions\/148904"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/media\/148902"}],"wp:attachment":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=148901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=148901"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=148901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}