{"id":114464,"date":"2025-12-17T18:25:35","date_gmt":"2025-12-17T18:25:35","guid":{"rendered":"https:\/\/ekamu.net\/?p=114464"},"modified":"2025-12-17T18:25:35","modified_gmt":"2025-12-17T18:25:35","slug":"superkilonova-fenomenine-dair-ilk-gozlem-patlama-icinde-patlama-tespit-edildi","status":"publish","type":"post","link":"https:\/\/ekamu.net\/index.php\/2025\/12\/17\/superkilonova-fenomenine-dair-ilk-gozlem-patlama-icinde-patlama-tespit-edildi\/","title":{"rendered":"S\u00fcperkilonova fenomenine dair ilk g\u00f6zlem: Patlama i\u00e7inde patlama tespit edildi"},"content":{"rendered":"

<\/span> G\u00f6kbilimciler, evrende \u015fimdiye kadar g\u00f6r\u00fclmemi\u015f olabilecek son derece nadir bir kozmik olaya dair g\u00fc\u00e7l\u00fc ipu\u00e7lar\u0131 elde etti. Bir patlaman\u0131n i\u00e7inde ger\u00e7ekle\u015fen ikinci bir patlama, a\u011f\u0131r elementlerin nas\u0131l olu\u015ftu\u011funa dair mevcut anlay\u0131\u015f\u0131 k\u00f6kten de\u011fi\u015ftirebilecek yeni bir fenomenin, yani \u201cs\u00fcperkilonova<\/strong>\u201dn\u0131n ilk g\u00f6zlemi olabilir. <\/figure>\n

Bilinen s\u00fcre\u00e7te b\u00fcy\u00fck k\u00fctleli y\u0131ld\u0131zlar<\/strong>, \u00f6m\u00fcrlerinin sonunda s\u00fcpernova<\/strong> olarak patl\u0131yor ve karbon ile demir gibi g\u00f6rece hafif elementleri uzaya sa\u00e7\u0131yor. Buna kar\u015f\u0131l\u0131k, iki n\u00f6tron y\u0131ld\u0131z\u0131n\u0131n \u00e7arp\u0131\u015fmas\u0131<\/strong> sonucu ortaya \u00e7\u0131kan kilonovalar<\/strong>, alt\u0131n ve uranyum gibi \u00e7ok daha a\u011f\u0131r elementlerin \u00fcretildi\u011fi nadir olaylar olarak kabul ediliyor. Bu elementler, gezegenlerin, y\u0131ld\u0131zlar\u0131n ve nihayetinde ya\u015fam\u0131n yap\u0131 ta\u015flar\u0131n\u0131 olu\u015fturuyor.<\/p>\n

2017 y\u0131l\u0131nda tespit edilen ve GW170817 olarak adland\u0131r\u0131lan olay, bug\u00fcne kadar \u0131\u015f\u0131k ve k\u00fctle\u00e7ekim dalgalar\u0131 birlikte g\u00f6zlemlenerek do\u011frulanm\u0131\u015f tek kilonova olay\u0131 olarak kaydedilmi\u015fti.<\/p>\n

Hem s\u00fcpernova hem de kilonova<\/b><\/p>\n

<\/span> \u015eimdi ise ara\u015ft\u0131rmac\u0131lar, AT2025ulz<\/strong> ad\u0131 verilen \u00e7ok daha karma\u015f\u0131k ve gizemli bir ikinci aday\u0131n izini s\u00fcrd\u00fcklerini a\u00e7\u0131klad\u0131. Bu olay, klasik bir s\u00fcpernova ile kilonova aras\u0131ndaki s\u0131n\u0131rlar\u0131 bulan\u0131kla\u015ft\u0131r\u0131yor ve teorik olarak \u00f6ng\u00f6r\u00fclm\u00fc\u015f ancak hi\u00e7 g\u00f6zlemlenmemi\u015f bir mekanizmaya i\u015faret ediyor. <\/figure>\n

Caltech\u2019ten Mansi Kasliwal, yakla\u015f\u0131k \u00fc\u00e7 g\u00fcn boyunca bu olay\u0131n 2017\u2019deki ilk kilonovaya neredeyse birebir benzedi\u011fini ancak sonras\u0131nda beklenmedik bir bi\u00e7imde s\u00fcpernova gibi davranmaya ba\u015flad\u0131\u011f\u0131n\u0131 s\u00f6yledi.<\/p>\n

T\u00fcm s\u00fcrecin ba\u015flang\u0131c\u0131 ise 18 A\u011fustos 2025\u2019te ABD\u2019deki LIGO ve \u0130talya\u2019daki Virgo dedekt\u00f6rlerinin zay\u0131f bir k\u00fctle\u00e7ekim dalgas\u0131 sinyali yakalamas\u0131na dayan\u0131yor. Veriler, \u00e7arp\u0131\u015fan nesnelerden en az birinin tipik bir n\u00f6tron y\u0131ld\u0131z\u0131ndan daha d\u00fc\u015f\u00fck k\u00fctleye sahip oldu\u011funu g\u00f6steriyordu.<\/p>\n

Bunun hemen ard\u0131ndan Zwicky Transient Facility, 1,3 milyar \u0131\u015f\u0131k y\u0131l\u0131 uzakl\u0131kta<\/strong> h\u0131zla s\u00f6n\u00fcmlenen k\u0131rm\u0131z\u0131 bir parlama tespit etti. Bu optik kaynak daha sonra AT2025ulz olarak adland\u0131r\u0131ld\u0131. \u0130lk takip g\u00f6zlemleri, \u0131\u015f\u0131\u011f\u0131n h\u0131zl\u0131 s\u00f6n\u00fcmlenen ve k\u0131rm\u0131z\u0131 a\u011f\u0131rl\u0131kl\u0131 yap\u0131s\u0131yla bir kilonovay\u0131 and\u0131rd\u0131\u011f\u0131n\u0131 ortaya koydu. Ancak beklenmedik bir \u015fekilde parlakl\u0131k yeniden artt\u0131, renk maviye d\u00f6nd\u00fc ve spektrumda hidrojen izleri belirdi. Bunlar, klasik bir s\u00fcpernovan\u0131n ay\u0131rt edici \u00f6zellikleriydi.<\/p>\n

<\/span> Bu ani d\u00f6n\u00fc\u015f\u00fcm, baz\u0131 g\u00f6kbilimcilerin olay\u0131 k\u00fctle\u00e7ekim dalgas\u0131 sinyaliyle ili\u015fkisiz, s\u0131radan bir y\u0131ld\u0131z patlamas\u0131 olarak de\u011ferlendirmesine yol a\u00e7t\u0131. Kasliwal ve ekibi ise bu yoruma kat\u0131lmad\u0131. AT2025ulz, bilinen s\u00fcpernova t\u00fcrleriyle de, standart kilonova \u015fablonlar\u0131yla da tam olarak \u00f6rt\u00fc\u015fm\u00fcyordu. <\/figure>\n

En kritik nokta, k\u00fctle\u00e7ekim dalgas\u0131 verilerinin G\u00fcne\u015f\u2019ten daha hafif k\u00fctleli bir n\u00f6tron y\u0131ld\u0131z\u0131na <\/strong>i\u015faret etmesi oldu. Mevcut y\u0131ld\u0131z evrimi modellerine g\u00f6re n\u00f6tron y\u0131ld\u0131zlar\u0131n\u0131n k\u00fctlesi genellikle G\u00fcne\u015f\u2019in en az 1,2 kat\u0131 civar\u0131nda ba\u015fl\u0131yor. Bu s\u0131n\u0131r\u0131n alt\u0131ndaki nesneler, teorik olarak \u201cvar olmamas\u0131 gereken<\/strong>\u201d cisimler olarak g\u00f6r\u00fcl\u00fcyor<\/p>\n

Kuramsal \u00e7al\u0131\u015fmalarda bu t\u00fcr k\u00fc\u00e7\u00fck n\u00f6tron y\u0131ld\u0131zlar\u0131n\u0131n iki \u015fekilde olu\u015fabilece\u011fi<\/strong> \u00f6ne s\u00fcr\u00fcl\u00fcyor. \u0130lk senaryoda, \u00e7ok h\u0131zl\u0131 d\u00f6nen bir y\u0131ld\u0131z s\u00fcpernova s\u0131ras\u0131nda iki k\u00fc\u00e7\u00fck n\u00f6tron y\u0131ld\u0131z\u0131na b\u00f6l\u00fcn\u00fcyor. \u0130kinci senaryoda ise patlama sonras\u0131 olu\u015fan yo\u011fun bir madde diski, par\u00e7alanarak minyat\u00fcr bir n\u00f6tron y\u0131ld\u0131z\u0131 meydana getiriyor.<\/p>\n

Columbia \u00dcniversitesi\u2019nden Brian Metzger\u2019e g\u00f6re bu y\u0131ld\u0131zlar bir \u00e7ift olu\u015fturup k\u00fctle\u00e7ekim dalgalar\u0131 yayarak birle\u015firse ortaya \u00e7\u0131kan olay bir kilonova yerine bir s\u00fcpernova e\u015fli\u011finde g\u00f6r\u00fclebilir. Bu senaryoda s\u00fcpernova, iki \u201cbebek\u201d n\u00f6tron y\u0131ld\u0131z\u0131n\u0131 do\u011furuyor. Y\u0131ld\u0131zlar k\u0131sa s\u00fcrede birle\u015ferek bir kilonova olu\u015fturuyor ancak bu kilonovan\u0131n \u0131\u015f\u0131\u011f\u0131, geni\u015fleyen s\u00fcpernova enkaz\u0131 taraf\u0131ndan k\u0131smen gizleniyor. D\u0131\u015far\u0131dan bak\u0131ld\u0131\u011f\u0131nda ise olay, \u00f6nce kilonova sonra s\u00fcpernova gibi g\u00f6r\u00fcnen karma\u015f\u0131k bir \u0131\u015f\u0131k e\u011frisi sergiliyor. \u0130\u015fte bu nedenle AT2025ulz, olas\u0131 ilk s\u00fcperkilonova aday\u0131 olarak de\u011ferlendiriliyor.<\/p>\n

Ara\u015ft\u0131rma ekibi, mevcut kan\u0131tlar\u0131n hen\u00fcz kesin olmad\u0131\u011f\u0131n\u0131 vurguluyor. Ancak ZTF, Vera Rubin G\u00f6zlemevi, NASA\u2019n\u0131n Nancy Grace Roman Uzay Teleskobu, UVEX ve di\u011fer yeni nesil projelerle birlikte, benzer \u015fekilde \u201cmaskelenmi\u015f\u201d olaylar\u0131n daha s\u0131k yakalanabilece\u011fi d\u00fc\u015f\u00fcn\u00fcl\u00fcyor.<\/p>\n\n

https:\/\/www.youtube.com\/embed\/YyBjrmXNNmQ<\/span><\/p>\n

Kaynak :\u00a0https:\/\/www.donanimhaber.com\/ilk-superkilonova-gozlemi-patlama-icinde-patlama-tespit-edildi–199820<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

G\u00f6kbilimciler, evrende \u015fimdiye kadar g\u00f6r\u00fclmemi\u015f olabilecek son derece nadir bir kozmik olaya dair g\u00fc\u00e7l\u00fc ipu\u00e7lar\u0131 elde etti. Bir patlaman\u0131n i\u00e7inde ger\u00e7ekle\u015fen ikinci bir patlama, a\u011f\u0131r elementlerin nas\u0131l olu\u015ftu\u011funa dair mevcut anlay\u0131\u015f\u0131 k\u00f6kten …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[6820,6821,247,4945,1096],"class_list":["post-114464","post","type-post","status-publish","format-standard","hentry","category-teknoloji","tag-kilonova","tag-notron-yildizi","tag-olay","tag-supernova","tag-yildiz"],"_links":{"self":[{"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/posts\/114464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/comments?post=114464"}],"version-history":[{"count":1,"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/posts\/114464\/revisions"}],"predecessor-version":[{"id":114465,"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/posts\/114464\/revisions\/114465"}],"wp:attachment":[{"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/media?parent=114464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/categories?post=114464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ekamu.net\/index.php\/wp-json\/wp\/v2\/tags?post=114464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}