{"id":12652,"date":"2017-04-01T17:45:20","date_gmt":"2017-04-01T14:45:20","guid":{"rendered":"http:\/\/109.232.216.219\/~bilimvegelecek\/?p=12652"},"modified":"2018-02-12T11:35:09","modified_gmt":"2018-02-12T08:35:09","slug":"karanlik-madde-haritalandi","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2017\/04\/01\/karanlik-madde-haritalandi","title":{"rendered":"Karanl\u0131k madde haritaland\u0131"},"content":{"rendered":"

Yale \u00dcniversitesi liderli\u011findeki bir ekip, \u015fimdiye dek yap\u0131lm\u0131\u015f en y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fckl\u00fc karanl\u0131k madde haritas\u0131n\u0131 \u00e7\u0131kard\u0131. Harita, evrenin madde y\u0131\u011f\u0131n\u0131n\u0131 olu\u015fturan, so\u011fuk karanl\u0131k madde ad\u0131 verilen par\u00e7ac\u0131klar\u0131n\u0131n olu\u015fumuna dair detaylar sunuyor.<\/p>\n

Hubble Uzay Teleskobu kullan\u0131larak elde edilen galaksi k\u00fcme \u00fc\u00e7l\u00fcs\u00fcn\u00fcn g\u00f6r\u00fcnt\u00fclerindeki lenslenme etkileri de\u015fifre edilerek haritaland\u0131rma ger\u00e7ekle\u015ftirildi. K\u00fctle\u00e7ekimsel lensleme ad\u0131 verilen bu fiziksel fenomen yard\u0131m\u0131yla, galaksi k\u00fcmeleri kozmik bir b\u00fcy\u00fcte\u00e7 g\u00f6revi g\u00f6rerek evrenin uzak noktalar\u0131n\u0131 g\u00f6rebilmemizi sa\u011flar.<\/p>\n

Yale \u00dcniversitesi\u2019nden astrofizik\u00e7i Priyamvada Natarajan\u2019\u0131n liderlik etti\u011fi ekip Hubble g\u00f6r\u00fcnt\u00fclerini analiz etti. \u201c\u00dc\u00e7 k\u00fcmeden gelen veriler yard\u0131m\u0131yla, k\u00fcmeler i\u00e7erisindeki karanl\u0131k madde da\u011f\u0131l\u0131m\u0131n\u0131 detayl\u0131 \u015fekilde haritaland\u0131rd\u0131k\u201d diyen Natarajan, \u201cVeriler izin verdi\u011fi m\u00fcddet\u00e7e, karanl\u0131k maddece yo\u011fun t\u00fcm b\u00f6lgeleri tespit ederek, \u015fimdiye dek \u00fcretilmi\u015f en detayl\u0131 topolojik haritay\u0131 olu\u015fturduk\u201d diye ekliyor.<\/p>\n

Karanl\u0131k madde, \u0131\u015f\u0131\u011f\u0131 yans\u0131tmayan veya so\u011furmayan, dolay\u0131s\u0131yla g\u00f6r\u00fclemeyen ancak k\u00fctle\u00e7ekimsel etki meydana getiren ve evrendeki maddenin y\u00fczde 80\u2019ini olu\u015fturan gizemli bir madde t\u00fcr\u00fcd\u00fcr. Karanl\u0131k madde teorisi, galaksilerin nas\u0131l olu\u015ftu\u011funa ve evrenin nas\u0131l yap\u0131land\u0131\u011f\u0131na dair a\u00e7\u0131klamalar ortaya koymaktad\u0131r. Aksiyon ve n\u00f6tralino gibi karanl\u0131k madde aday par\u00e7ac\u0131klar\u0131n\u0131 ke\u015ffedebilmek amac\u0131yla ise Yale dahil bir\u00e7ok \u00fcniversite ve ara\u015ft\u0131rma kurumu \u00e7al\u0131\u015fmalar\u0131n\u0131 s\u00fcrd\u00fcr\u00fcyor. Bu konuyla ilgili Natarajan, \u201cKaranl\u0131k maddenin evrende nas\u0131l da\u011f\u0131ld\u0131\u011f\u0131na dair detayl\u0131 haritalar\u0131m\u0131z da olsa, ne oldu\u011funa dair hen\u00fcz net bir bilgimiz yok\u201d diye belirtiyor.<\/p>\n

Karanl\u0131k madde, uzak galaksilerden gelen \u0131\u015f\u0131\u011f\u0131 b\u00fckerek k\u00fctle\u00e7ekimsel lenslemeyi yaratacak kay\u0131p k\u00fctle miktar\u0131n\u0131 kar\u015f\u0131layacak niteliktedir. Lensleme neticesinde bize b\u00fck\u00fclm\u00fc\u015f \u015fekilde ula\u015fan \u0131\u015f\u0131k, b\u00fck\u00fclmeye u\u011frad\u0131\u011f\u0131 her yerde sistematik olarak bir bozulmaya u\u011framaktad\u0131r. Bu bozulmalar\u0131 \u00e7\u00f6zen Natarajan ve ekibi de karanl\u0131k madde haritaland\u0131rmas\u0131n\u0131 ger\u00e7ekle\u015ftirmeyi ba\u015fard\u0131lar.<\/p>\n

Ekibin elde etti\u011fi sonu\u00e7lar, so\u011fuk karanl\u0131k madde teorisinden \u00fcretilen sim\u00fclasyonlarla uyum g\u00f6stermektedir. So\u011fuk kelimesi, \u0131\u015f\u0131k h\u0131z\u0131yla kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda olduk\u00e7a yava\u015f hareket eden karanl\u0131k madde t\u00fcr\u00fc olmas\u0131ndan dolay\u0131d\u0131r. Ara\u015ft\u0131rmac\u0131lar, bulgular\u0131n standard model ile uyumunun kayda de\u011fer oldu\u011funu belirtiyor. \u00c7al\u0131\u015fmada, evrenin yap\u0131 da\u011f\u0131l\u0131m\u0131n\u0131 ana ak\u0131m teori \u00fczerinden taklit eden y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fckl\u00fc sim\u00fclasyonlar kullan\u0131ld\u0131. Bulgular detayl\u0131 bir \u015fekilde\u00a0Kraliyet Astronomi Toplulu\u011fu Ayl\u0131k Haberleri<\/em>\u2019nde (MNRAS) yay\u0131mlanacak.<\/p>\n","protected":false},"excerpt":{"rendered":"

Yale \u00dcniversitesi liderli\u011findeki bir ekip, \u015fimdiye dek yap\u0131lm\u0131\u015f en y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fckl\u00fc karanl\u0131k madde haritas\u0131n\u0131 \u00e7\u0131kard\u0131. Harita, evrenin madde y\u0131\u011f\u0131n\u0131n\u0131 olu\u015fturan, so\u011fuk karanl\u0131k madde ad\u0131 verilen par\u00e7ac\u0131klar\u0131n\u0131n olu\u015fumuna dair detaylar sunuyor. Hubble Uzay Teleskobu kullan\u0131larak elde edilen galaksi k\u00fcme \u00fc\u00e7l\u00fcs\u00fcn\u00fcn g\u00f6r\u00fcnt\u00fclerindeki lenslenme etkileri de\u015fifre edilerek haritaland\u0131rma ger\u00e7ekle\u015ftirildi. K\u00fctle\u00e7ekimsel lensleme ad\u0131 verilen bu fiziksel fenomen yard\u0131m\u0131yla, galaksi […]<\/p>\n","protected":false},"author":634,"featured_media":12653,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[195,30,19,26],"tags":[247,657,1085,1084,392],"class_list":["post-12652","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-158-sayi","category-astronomi","category-bilim-gundemi","category-fizik","tag-astrofizik","tag-evren","tag-isik","tag-karanlik-madde","tag-uzay"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t