\n<\/p>\n
SNR 0509-67.5 ad\u0131yla kataloglanan bu kal\u0131nt\u0131, D\u00fcnya\u2019dan yakla\u015f\u0131k 160 bin \u0131\u015f\u0131k y\u0131l\u0131 uzakl\u0131kta bulunuyor ve 23 \u0131\u015f\u0131k y\u0131l\u0131 geni\u015fli\u011finde dev bir \u0131\u015f\u0131ldayan k\u00fcre \u015feklinde uzayda s\u00fcz\u00fcl\u00fcyor. Bu ke\u015fif, y\u0131ld\u0131zlar\u0131n ya\u015fam d\u00f6ng\u00fcs\u00fcne dair bilinenleri sarsacak t\u00fcrden: Astronomlar ilk kez bir y\u0131ld\u0131z\u0131n \u00e7ift patlama ya\u015fad\u0131\u011f\u0131na dair do\u011frudan kan\u0131t buldu.<\/p>\n
Patlayan y\u0131ld\u0131z bir zamanlar, k\u00fctlesi G\u00fcne\u015f kadar a\u011f\u0131r ama boyutu D\u00fcnya kadar k\u00fc\u00e7\u00fck bir beyaz c\u00fcceydi. Standart teorilere g\u00f6re, beyaz c\u00fccelerin Type Ia s\u00fcpernovaya d\u00f6n\u00fc\u015fmeden \u00f6nce \u201cChandrasekhar s\u0131n\u0131r\u0131\u201d denilen 1.4 G\u00fcne\u015f k\u00fctlesine ula\u015fmas\u0131 gerekiyordu. Ancak yeni bulgular, SNR 0509\u2019daki y\u0131ld\u0131z\u0131n bu s\u0131n\u0131ra ula\u015fmadan yok oldu\u011funu g\u00f6steriyor.<\/p>\n
Ara\u015ft\u0131rmay\u0131 y\u00fcr\u00fcten, Avustralya\u2019daki Yeni G\u00fcney Galler \u00dcniversitesi\u2019nden Priyam Das, bu y\u0131ld\u0131z\u0131n y\u00fczeyindeki ince helyum tabakas\u0131n\u0131n k\u00fc\u00e7\u00fck bir patlamayla ate\u015flenerek, karbon-oksijen \u00e7ekirde\u011finde ikinci bir b\u00fcy\u00fck patlamay\u0131 tetikledi\u011fini belirtiyor. Bu zincirleme reaksiyon, y\u0131ld\u0131z hen\u00fcz bir G\u00fcne\u015f k\u00fctlesi civar\u0131ndayken onu par\u00e7alara ay\u0131rd\u0131.<\/p>\n