{"id":15163,"date":"2016-07-01T11:19:55","date_gmt":"2016-07-01T08:19:55","guid":{"rendered":"http:\/\/109.232.216.219\/~bilimvegelecek\/?p=15163"},"modified":"2017-12-26T11:24:25","modified_gmt":"2017-12-26T08:24:25","slug":"buyuk-probleme-yeni-cozum-samanyolunu-tartmak","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2016\/07\/01\/buyuk-probleme-yeni-cozum-samanyolunu-tartmak","title":{"rendered":"B\u00fcy\u00fck probleme yeni \u00e7\u00f6z\u00fcm:\u00a0Samanyolu\u2019nu tartmak"},"content":{"rendered":"

Samanyolu\u2019nun k\u00fctlesinin ne oldu\u011funa dair verilebilecek kaba taslak bir cevap, yakla\u015f\u0131k 700 milyar g\u00fcne\u015f k\u00fctlesi olacakt\u0131r. G\u00fcne\u015f\u2019in k\u00fctlesi ise D\u00fcnya\u2019dan 330 bin kat fazla; yakla\u015f\u0131k 2×1030<\/sup>\u00a0(2\u2019nin yan\u0131na 30 tane s\u0131f\u0131r) kilogramd\u0131r. Evrende ise Samanyolu\u2019ndan b\u00fcy\u00fck bir\u00e7ok galaksi mevcuttur.<\/p>\n

Galaksimizin veya herhangi bir galaksinin k\u00fctlesini hesaplamak olduk\u00e7a zordur. Galaksilerin\u00a0 k\u00fctlesinin b\u00fcy\u00fck \u00e7o\u011funlu\u011fu, y\u0131ld\u0131zlar, gezegenler, uydular, gaz ve toz bulutlar\u0131n\u0131n yan\u0131 s\u0131ra, ne oldu\u011fu hen\u00fcz anla\u015f\u0131lamam\u0131\u015f, \u0131\u015f\u0131ma yapmayan karanl\u0131k maddeden meydana gelir. Hen\u00fcz laboratuvar ortam\u0131nda g\u00f6zlenememi\u015f karanl\u0131k madde hakk\u0131ndaki fikirlerimiz ise g\u00f6zleyebildi\u011fimiz maddeye olan \u00e7ekimsel etkilerinden kaynaklan\u0131yor.<\/p>\n

McMaster \u00dcniversitesi Fizik ve Astronomi B\u00f6l\u00fcm\u00fc\u2019nde doktora \u00f6\u011frencisi kad\u0131n astronom Gwendolyn Eadie, Samanyolu etraf\u0131nda d\u00f6nmekte olan k\u00fcresel y\u0131ld\u0131z k\u00fcmelerinin h\u0131z ve pozisyonlar\u0131n\u0131 \u00f6l\u00e7erek, Samanyolu ve i\u00e7erisindeki karanl\u0131k maddenin k\u00fctlelerini hesaplamay\u0131 ba\u015fard\u0131.<\/p>\n

K\u00fcresel y\u0131ld\u0131z k\u00fcmelerinin y\u00f6r\u00fcngeleri, etraf\u0131nda d\u00f6nd\u00fc\u011f\u00fc galaksinin uygulad\u0131\u011f\u0131 k\u00fctle\u00e7ekimiyle do\u011frudan ili\u015fkilidir. K\u00fctle\u00e7ekiminin \u015fiddetini ise galaksi i\u00e7erisindeki madde ve karanl\u0131k madde belirler. Eadie\u2019nin \u00e7al\u0131\u015fmas\u0131ndaki yenilik ise k\u00fcresel k\u00fcmelerin h\u0131zlar\u0131ndan yararlanarak kulland\u0131\u011f\u0131 tekniktedir. K\u00fcresel k\u00fcmelerin iki y\u00f6nl\u00fc h\u0131z\u0131 vard\u0131r: Birincisi bak\u0131\u015f a\u00e7\u0131m\u0131z boyunca; di\u011feri ise uzay d\u00fczlemi boyunca (\u00f6z hareket) olan h\u0131zd\u0131r. Fakat ara\u015ftrmac\u0131lar t\u00fcm k\u00fcresel k\u00fcmelerin \u00f6z hareketlerini hen\u00fcz \u00f6l\u00e7ebilmi\u015f de\u011fil.<\/p>\n

Ancak Eadie, iki y\u00f6ndeki h\u0131zlar\u0131 bilinen k\u00fcresel k\u00fcmelerin yan\u0131 s\u0131ra tek y\u00f6ndeki h\u0131zlar\u0131 bilinen k\u00fcresel k\u00fcmeleri de i\u015fin i\u00e7erisine katman\u0131n bir yolunu bularak, galaksi k\u00fctlelerinin hesaplanabilece\u011fi yeni bir y\u00f6ntem geli\u015ftirdi. Geli\u015ftirdi\u011fi y\u00f6ntem ayn\u0131 zamanda, belirli bir hata pay\u0131yla, galaksi merkeziyle merkezden herhangi bir uzakl\u0131k aras\u0131ndaki toplam k\u00fctleyi hesaplamaya da olanak tan\u0131yor. Bu yeni y\u00f6ntem, galaksi k\u00fctle tayinlerinin daha kesin \u015fekilde yap\u0131labilmesini sa\u011fl\u0131yor ve b\u00fcy\u00fck \u00f6l\u00e7ekli k\u00fctle hesaplamalar\u0131 a\u00e7\u0131s\u0131ndan umut vaat ediyor.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Samanyolu\u2019nun k\u00fctlesinin ne oldu\u011funa dair verilebilecek kaba taslak bir cevap, yakla\u015f\u0131k 700 milyar g\u00fcne\u015f k\u00fctlesi olacakt\u0131r. G\u00fcne\u015f\u2019in k\u00fctlesi ise D\u00fcnya\u2019dan 330 bin kat fazla; yakla\u015f\u0131k 2×1030\u00a0(2\u2019nin yan\u0131na 30 tane s\u0131f\u0131r) kilogramd\u0131r. Evrende ise Samanyolu\u2019ndan b\u00fcy\u00fck bir\u00e7ok galaksi mevcuttur. Galaksimizin veya herhangi bir galaksinin k\u00fctlesini hesaplamak olduk\u00e7a zordur. Galaksilerin\u00a0 k\u00fctlesinin b\u00fcy\u00fck \u00e7o\u011funlu\u011fu, y\u0131ld\u0131zlar, gezegenler, uydular, gaz […]<\/p>\n","protected":false},"author":634,"featured_media":15164,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[186,30,19,26],"tags":[248,1651,1091,1748,403],"class_list":["post-15163","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-149-sayi","category-astronomi","category-bilim-gundemi","category-fizik","tag-astronomi","tag-galaksi","tag-kutle","tag-samanyolu","tag-yildiz-takimi"],"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