{"id":38611,"date":"2019-11-28T11:12:41","date_gmt":"2019-11-28T08:12:41","guid":{"rendered":"https:\/\/bilimvegelecek.com.tr\/?p=38611"},"modified":"2019-11-28T11:17:46","modified_gmt":"2019-11-28T08:17:46","slug":"gunesten-70-kat-daha-buyuk-bir-kara-delik-kesfedildi","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2019\/11\/28\/gunesten-70-kat-daha-buyuk-bir-kara-delik-kesfedildi","title":{"rendered":"G\u00fcne\u015f\u2019in k\u00fctlesinden 70 kat daha b\u00fcy\u00fck k\u00fctleye sahip olan kara delik ke\u015ffedildi"},"content":{"rendered":"

G\u00f6kbilimciler taraf\u0131ndan yap\u0131lan yeni ara\u015ft\u0131rmada, baz\u0131 kara deliklerin daha \u00f6nce d\u00fc\u015f\u00fcn\u00fclenden iki kat daha b\u00fcy\u00fck olabilece\u011fi ke\u015ffedildi.<\/p>\n

\u00c7in Ulusal Ulusal Astronomik G\u00f6zlemevi’nde \u00e7al\u0131\u015fma y\u00fcr\u00fcten Profes\u00f6r Jifeng Liu, \u00c7in’in kuzey do\u011fusunda bulunan LAMOST optik teleskopunu kullanarak G\u00fcne\u015f\u2019ten 70 kat daha b\u00fcy\u00fck bir kara deli\u011fin varl\u0131\u011f\u0131n\u0131 tespit etti.<\/p>\n

Biliminsanlar\u0131n\u0131n \u00e7al\u0131\u015fmaya ili\u015fkin raporu Nature dergisinde yay\u0131mland\u0131. LB-1 olarak isimlendirilen bu kara delik, D\u00fcnya\u2019dan 15 bin \u0131\u015f\u0131k y\u0131l\u0131 uzakta bulunuyor. Profes\u00f6r Jifeng Liu, \u201cG\u00fcn\u00fcm\u00fcz y\u0131ld\u0131z modelleri ile k\u0131yaslayacak olursak, bu t\u00fcr kara deliklerin galaksimiz i\u00e7erisinde olmamas\u0131 gerekir\u201d dedi ve ekledi: \u201cLB-1, daha \u00f6nce d\u00fc\u015f\u00fcnd\u00fc\u011f\u00fcm\u00fczden iki kat daha b\u00fcy\u00fck. \u015eimdi ara\u015ft\u0131rmac\u0131lar bu kara deli\u011fin olu\u015fumunu ara\u015ft\u0131rmaya ba\u015flamal\u0131.\u201d<\/p>\n

Birka\u00e7 y\u0131l \u00f6ncesine kadar LB-1 gibi kara delikler, ancak bir y\u0131ld\u0131zdan ald\u0131klar\u0131 \u00e7e\u015fitli gazlar yoluyla ke\u015ffedilebilirlerdi. Bu s\u00fcre\u00e7, daralt\u0131larak kara deli\u011fe do\u011fru \u00e7ekilen nesnenin varl\u0131\u011f\u0131n\u0131 ortaya \u00e7\u0131karan g\u00fc\u00e7l\u00fc X \u0131\u015f\u0131n\u0131 sal\u0131n\u0131mlar\u0131 olu\u015ftururdu. Bu sal\u0131n\u0131mlar D\u00fcnya\u2019dan da tespit edilebilirdi. (Galaksimizde bulunan bu t\u00fcr kara deliklerin b\u00fcy\u00fck bir k\u0131sm\u0131, bu s\u00fcreci i\u015fletmez ve dolay\u0131s\u0131yla X \u0131\u015f\u0131n\u0131 sal\u0131n\u0131m\u0131 yapmazlar.)<\/p>\n

Bu s\u0131n\u0131rlamay\u0131 a\u015fmak isteyen biliminsanlar\u0131, \u0130ngiliz biliminsan\u0131 John Michell taraf\u0131ndan 1783 y\u0131l\u0131nda \u00f6nerilen ancak teleskop ve mercek teknolojisinin geli\u015fimi ile birlikte g\u00fcn\u00fcm\u00fczde kullan\u0131m\u0131 m\u00fcmk\u00fcn hale gelen bir tekni\u011fi kullanarak incelemelerde bulundu. Bu metodu, \u201cSamanl\u0131kta i\u011fne aramak\u201d olarak nitelendirmek m\u00fcmk\u00fcn. \u00c7\u00fcnk\u00fc LB-1 ve benzeri kara delikler, binde bir oran\u0131nda g\u00f6zleniyor.<\/p>\n

Biliminsanlar\u0131n\u0131n \u00e7al\u0131\u015fmalar\u0131 sonucu ger\u00e7ekle\u015ftirilen ke\u015fif s\u0131ras\u0131nda, G\u00fcne\u015f\u2019in k\u00fctlesinin sekiz kat\u0131 k\u00fctleye sahip olan bir y\u0131ld\u0131z\u0131n, G\u00fcne\u015f\u2019ten 70 kat daha b\u00fcy\u00fck bir k\u00fctleye sahip olan kara deli\u011fin y\u00f6r\u00fcngesinde d\u00f6nd\u00fc\u011f\u00fc g\u00f6zlemlenmi\u015fti. Bu kara delik d\u00f6n\u00fc\u015f\u00fcn\u00fc 79 g\u00fcnde tamamlamaktayd\u0131.<\/p>\n

Monash \u00dcniversitesi\u2019nden Alexander Heger, daha \u00f6nce Astronomi d\u00fcnyas\u0131nda hakim olan g\u00f6r\u00fc\u015f\u00fcn, galaksimizdeki y\u0131ld\u0131zlar\u0131n G\u00fcne\u015f\u2019in k\u00fctlesinin 45 kat\u0131ndan daha b\u00fcy\u00fck bir y\u0131ld\u0131z olu\u015fturamayaca\u011f\u0131 y\u00f6n\u00fcnde oldu\u011funu belirtti ve ekledi: \u201cAncak bu \u00e7al\u0131\u015fmada g\u00f6zlemlenen kara delik, bahsedilen s\u0131n\u0131rdan daha b\u00fcy\u00fck. Art\u0131k geli\u015fmi\u015f teleskoplar\u0131 kullanarak, ayr\u0131nt\u0131l\u0131 pek \u00e7ok g\u00f6zlem yapabilece\u011fiz.\u201d<\/p>\n

Kaynak:<\/strong> https:\/\/cosmosmagazine.com\/space\/can-black-holes-get-any-bigger-seems-that-s-a-yes<\/p>\n","protected":false},"excerpt":{"rendered":"

G\u00f6kbilimciler taraf\u0131ndan yap\u0131lan yeni ara\u015ft\u0131rmada, baz\u0131 kara deliklerin daha \u00f6nce d\u00fc\u015f\u00fcn\u00fclenden iki kat daha b\u00fcy\u00fck olabilece\u011fi ke\u015ffedildi. \u00c7in Ulusal Ulusal Astronomik G\u00f6zlemevi’nde \u00e7al\u0131\u015fma y\u00fcr\u00fcten Profes\u00f6r Jifeng Liu, \u00c7in’in kuzey do\u011fusunda bulunan LAMOST optik teleskopunu kullanarak G\u00fcne\u015f\u2019ten 70 kat daha b\u00fcy\u00fck bir kara deli\u011fin varl\u0131\u011f\u0131n\u0131 tespit etti. Biliminsanlar\u0131n\u0131n \u00e7al\u0131\u015fmaya ili\u015fkin raporu Nature dergisinde yay\u0131mland\u0131. LB-1 olarak […]<\/p>\n","protected":false},"author":1390,"featured_media":38612,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[1651,795,766,2765,1780],"class_list":["post-38611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-galaksi","tag-gunes","tag-kara-delik","tag-x-isini","tag-yildiz"],"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