{"id":44179,"date":"2011-11-01T22:53:21","date_gmt":"2011-11-01T20:53:21","guid":{"rendered":"https:\/\/bilimvegelecek.com.tr\/?p=44179"},"modified":"2020-05-17T22:58:47","modified_gmt":"2020-05-17T19:58:47","slug":"2011-nobel-fizik-odulu-uzak-supernova-gozlemi-ile-genisleyen-evrenin-kesfi","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2011\/11\/01\/2011-nobel-fizik-odulu-uzak-supernova-gozlemi-ile-genisleyen-evrenin-kesfi","title":{"rendered":"2011 Nobel Fizik \u00d6d\u00fcl\u00fc Uzak s\u00fcpernova g\u00f6zlemi ile geni\u015fleyen evrenin ke\u015ffi"},"content":{"rendered":"

Haz\u0131rlayan: Elif Esen<\/strong><\/p>\n

\u0130sve\u00e7 Kraliyet Bilimler Akademisi uzak s\u00fcpernovalar\u0131n g\u00f6zlemlenmesi yoluyla evrenin geni\u015flemesinin h\u0131zland\u0131\u011f\u0131n\u0131 ke\u015ffeden iki grubu Fizik Dal\u0131nda Nobel \u00d6d\u00fcl\u00fc\u2019ne lay\u0131k g\u00f6rd\u00fc. \u00d6d\u00fcl\u00fcn yar\u0131s\u0131n\u0131 Kaliforniya \u00dcniversitesi\u2019nden Saul Perlmutter kazan\u0131rken, di\u011fer yar\u0131s\u0131 ise Avustralya Ulusal \u00dcniversitesi\u2019nden Brian P. Schmidt ve Johns Hopkins \u00dcniversitesi\u2019nden Adam G. Riess aras\u0131nda b\u00f6l\u00fc\u015f\u00fcld\u00fc.<\/p>\n

Robert Frost \u015f\u00f6yle yazm\u0131\u015ft\u0131: \u201cBaz\u0131lar\u0131 d\u00fcnyan\u0131n ate\u015fte, baz\u0131lar\u0131 ise buzda son bulaca\u011f\u0131n\u0131 s\u00f6yl\u00fcyor\u201d. Evrenin nihai kaderi ne olacak? Bu y\u0131lki Nobel \u00d6d\u00fcl\u00fc sahibi fizik\u00e7ilerin dedi\u011fine g\u00f6re, muhtemelen donarak sona erecek! Bu ekip s\u00fcpernova diye adland\u0131r\u0131lan patlayan y\u0131ld\u0131zlar \u00fczerinde yapt\u0131klar\u0131 \u00e7al\u0131\u015fmalarda evrenin giderek artan bir ivmeyle geni\u015fledi\u011fini ke\u015ffettiler. Bu ke\u015ffin sonu\u00e7lar\u0131 \u00f6d\u00fcl sahiplerinin kendilerine bile s\u00fcrpriz oldu.<\/p>\n

1998\u2019de iki ara\u015ft\u0131rma grubunun sundu\u011fu yeni sonu\u00e7lar kozmolojiyi temelinden sarst\u0131. Bu ekiplerden biri 1988\u2019de kurulan ve Saul Perlmutter\u2019\u0131n ba\u015fkanl\u0131\u011f\u0131n\u0131 yapt\u0131\u011f\u0131 grup iken, di\u011feri ise 1994\u2019te kurulan ve Brian Schmidt\u2019in ba\u015fkanl\u0131\u011f\u0131n\u0131 yapt\u0131\u011f\u0131, Adam Riess\u2019in de \u00f6nemli bir rol ald\u0131\u011f\u0131 ekiptir.<\/p>\n

\"\"
Ara\u015ft\u0131rmac\u0131lar s\u00fcpernovalar\u0131n \u00f6zel bir t\u00fcr\u00fc olan \u201cla supernova\u201dy\u0131 kulland\u0131lar.<\/figcaption><\/figure>\n

Bu iki ara\u015ft\u0131rma ekibi, en uzak noktada bulunan s\u00fcpernovan\u0131n yerini belirleyerek evrenin haritas\u0131n\u0131 \u00e7\u0131karmak i\u00e7in yar\u0131\u015ft\u0131lar. 1990\u2019larda yery\u00fcz\u00fc ve uzay i\u00e7in ultra geli\u015fmi\u015f teleskoplar\u0131n, geli\u015fmi\u015f bilgisayar sistemlerinin ve yeni dijital g\u00f6r\u00fcnt\u00fcleme sens\u00f6rlerinin (CCD, 2009 Nobel Fizik \u00d6d\u00fcl\u00fc) geli\u015ftirilmesinin ve \u00fcretiminin artmas\u0131yla bu kozmolojik bulmacan\u0131n \u00e7\u00f6z\u00fcm\u00fcne y\u00f6nelik daha fazla par\u00e7an\u0131n eklenmesine olanak sa\u011flad\u0131.<\/p>\n

Ara\u015ft\u0131rmac\u0131lar s\u00fcpernovalar\u0131n \u00f6zel bir t\u00fcr\u00fc olan \u201cla supernova\u201dy\u0131 kulland\u0131lar. Bu s\u00fcpernova \u00e7ok eski kompakt bir y\u0131ld\u0131z\u0131n patlamas\u0131yla olu\u015ftu ki bu y\u0131ld\u0131z d\u00fcnya kadar k\u00fc\u00e7\u00fck fakat g\u00fcne\u015f kadar a\u011f\u0131r bir y\u0131ld\u0131zd\u0131. B\u00f6yle bir s\u00fcpernova patlamas\u0131 b\u00fct\u00fcn bir galaksi kadar \u0131\u015f\u0131n yayabilir. Sonu\u00e7ta bu iki ara\u015ft\u0131rma grubu \u0131\u015f\u0131\u011f\u0131 beklenenden daha zay\u0131f olan 50\u2019ye yak\u0131n uzak s\u00fcpernova ke\u015ffetti ki bu da evrenin geni\u015flemesinin h\u0131zland\u0131\u011f\u0131na i\u015faret ediyor. Ara\u015ft\u0131rmalar sonucunda bilim insanlar\u0131 her iki grubun da ayn\u0131 sonuca ula\u015ft\u0131\u011f\u0131 ger\u00e7e\u011finde birle\u015ftiler.<\/p>\n

Neredeyse bir y\u00fczy\u0131l boyunca, evrenin yakla\u015f\u0131k 14 milyar y\u0131l \u00f6nce meydana gelen B\u00fcy\u00fck Patlama sonucu geni\u015fledi\u011fi bilinmekteydi. Bunun yan\u0131nda, bu geni\u015flemenin giderek h\u0131zland\u0131\u011f\u0131n\u0131n ke\u015ffedilmesi olduk\u00e7a \u015fa\u015f\u0131rt\u0131c\u0131 oldu. E\u011fer geni\u015fleme h\u0131zlanmaya devam ederse, evrenin sonu donmak olacak.<\/p>\n

Bu h\u0131zlanman\u0131n karanl\u0131k enerjiden kaynakland\u0131\u011f\u0131 d\u00fc\u015f\u00fcn\u00fclmekte, fakat karanl\u0131k enerjinin ne oldu\u011fu muamma olmaya devam ediyor. Bilinen \u015fu ki karanl\u0131k enerji evrenin d\u00f6rtte \u00fc\u00e7\u00fcn\u00fc olu\u015fturmaktad\u0131r. Bu nedenle, 2011 Nobel Fizik \u00d6d\u00fcl\u00fc sahiplerinin bulgular\u0131 bilinmeyen evreni a\u00e7\u0131klamaya yard\u0131mc\u0131 olacak. Ve art\u0131k her \u015fey tekrardan m\u00fcmk\u00fcn.<\/p>\n

Kaynak:<\/strong> 18.10.2011 tarihinde http:\/\/www.sciencedaily.com\/releases\/2011\/10\/111004091704.htm adresinden derlenmi\u015ftir.<\/p>\n","protected":false},"excerpt":{"rendered":"

Haz\u0131rlayan: Elif Esen \u0130sve\u00e7 Kraliyet Bilimler Akademisi uzak s\u00fcpernovalar\u0131n g\u00f6zlemlenmesi yoluyla evrenin geni\u015flemesinin h\u0131zland\u0131\u011f\u0131n\u0131 ke\u015ffeden iki grubu Fizik Dal\u0131nda Nobel \u00d6d\u00fcl\u00fc\u2019ne lay\u0131k g\u00f6rd\u00fc. \u00d6d\u00fcl\u00fcn yar\u0131s\u0131n\u0131 Kaliforniya \u00dcniversitesi\u2019nden Saul Perlmutter kazan\u0131rken, di\u011fer yar\u0131s\u0131 ise Avustralya Ulusal \u00dcniversitesi\u2019nden Brian P. Schmidt ve Johns Hopkins \u00dcniversitesi\u2019nden Adam G. Riess aras\u0131nda b\u00f6l\u00fc\u015f\u00fcld\u00fc. Robert Frost \u015f\u00f6yle yazm\u0131\u015ft\u0131: \u201cBaz\u0131lar\u0131 d\u00fcnyan\u0131n ate\u015fte, […]<\/p>\n","protected":false},"author":429,"featured_media":44180,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[130,38,26],"tags":[6672,657,426,4162,6676],"class_list":["post-44179","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-93-sayi","category-dergi-sayilari","category-fizik","tag-6672","tag-evren","tag-kesif","tag-nobel-fizik-odulu","tag-uzak-supernova"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/44179","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/users\/429"}],"replies":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/comments?post=44179"}],"version-history":[{"count":0,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/44179\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media\/44180"}],"wp:attachment":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media?parent=44179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/categories?post=44179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/tags?post=44179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}