Kuphononongo oluxelwe mva nje, izazi ngeenkwenkwezi zaqaphela intsalela ye-SN 1987A isebenzisa UJames Webb Space Telescope (JWST). Iziphumo zibonise imigca yokukhutshwa kwe-argon ye-ionized kunye nezinye iintlobo zemichiza e-ionized kakhulu ukusuka kumbindi we-nebula malunga ne-SN 1987A. Ukuqwalaselwa kwee-ion ezinjalo kuthetha ubukho be-neutron esanda kuzalwa Nkwenkwezi njengomthombo wemitha yamandla aphezulu kumbindi we-supernova remanent.
Stars bazalwa, baguge kwaye ekugqibeleni bafe ngogqabhuko-dubulo. Xa isibaso siphela kwaye ukudityaniswa kwenyukliya kumbindi wenkwenkwezi kuyeka, amandla omxhuzulane angaphakathi acudisa umbindi ukuze ucutheke kwaye uwohloke. Njengoko kuqala ukuwa, kwiimilliseconds ezimbalwa, undoqo uye uxinzelelwe kangangokuba ii-electron kunye neeproton ziyadibana zenze i-neutron kwaye i-neutrino ikhutshwe kwi-neutron nganye eyenziweyo. Kwindaba ye iinkwenkwezi ezinkulu,undoqo uyawa ngexesha elifutshane kunye nokudubula okunamandla, okukhanyayo okubizwa ngokuba supernova. Ugqabhuko lwe-neutrinos oluveliswe ngexesha lokuwa kwe-core-wabalekela ngaphandle isithuba ayithintelwanga ngenxa yendalo yayo engadibaniyo nezinto, phambi kweefotoni ezibanjelwe ebaleni, kwaye zisebenza njengebhakana okanye isilumkiso kwangethuba sokuqaphela okunokwenzeka supernova ugqabhuko-dubulo kungekudala
SN 1987A yayisisiganeko sokugqibela se-supernova esibonwe esibhakabhakeni esisemazantsi ngoFebruwari 1987. Yayisisiganeko sokuqala esinje nge-supernova esibonakala ngeliso lenyama ukusukela oko eKepler's ngo-1604. Ibekwe kwi-160 000 yeminyaka yokukhanya ukusuka eMhlabeni kwiLifu eliLarge Magellanic (isathelayithi). Galaxy yeMilky Way), yayiyenye yezona nkwenkwezi zigqabhukileyo ezakhe zagqabhuka kwiminyaka engaphezu kwama-400 eyavutha ngamandla elanga elizizigidi ezili-100 kangangeenyanga eziliqela yaza yanika ithuba elikhethekileyo lokufundisisa izigaba ngaphambi, ebudeni nasemva kokufa Nkwenkwezi.
I-SN 1987A yayiyi-core-collapse supernova. Ugqabhuko-dubulo lwalukhatshwa yi-neutrino ekhutshwayo efunyenwe ngamayeza amabini e-Cherenkov amanzi, i-Kamiokande-II kunye ne-Irvine-MichiganBrookhaven (IMB) yovavanyo malunga neeyure ezimbini ngaphambi kokuqwalaselwa kwe-optical. Oku kucebise ukuba into edibeneyo (yinkwenkwezi ye-neutron okanye Umngxunya omnyama) bekufanele ukuba kwakheka emva kokuwa kondoqo, kodwa akukho nkwenkwezi ineutron ilandela isiganeko se-SN 1987A okanye naluphi na olunye ugqabhuko-dubulo lwe-supernova lwakutsha nje olukhe lwabhaqwa ngqo. Nangona kunjalo, kukho ubungqina obungathanga ngqo bobukho beenkwenkwezi ze-neutron kwintsalela.
Kuphononongo oluxelwe mva nje, izazi ngeenkwenkwezi zaqaphela intsalela ye-SN 1987A isebenzisa UJames Webb Space Telescope (JWST). Iziphumo zibonise imigca yokukhutshwa kwe-argon ye-ionized kunye nezinye iintlobo zemichiza e-ionized kakhulu ukusuka kumbindi we-nebula malunga ne-SN 1987A. Ukuqwalaselwa kwezi ion kuthetha ubukho benkwenkwezi esanda kuzalwa ye-neutron njengomthombo wemitha yamandla aphezulu kumbindi we-supernova remanent.
Eli lixesha lokuqala ukuba iziphumo zokukhutshwa kwamandla aphezulu ukusuka inkwenkwezi encinci ye-neutron zifunyenwe.
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Imithombo:
- Fransson C., et al 2024. Imigca yokukhupha ngenxa yemitha ye-ionizing ukusuka kwinto ehlangeneyo kwintsalela ye-Supernova 1987A. ISAYENSI. 22 February 2024. Vol 383, Ushicilelo 6685 iphepha 898-903. DOI: https://doi.org/10.1126/science.adj5796
- KwiYunivesithi yaseStockholm. Iindaba -iteleskopu kaJames Webb ibona umkhondo inkwenkwezi ye-neutron kwi-iconic supernova. 22 February 2024. Iyafumaneka e https://www.su.se/english/news/james-webb-telescope-detects-traces-of-neutron-star-in-iconic-supernova-1.716820
- ESA. I-News-Webb ifumana ubungqina beenkwenkwezi ze-neutron entliziyweni yentsalela encinci ye-supernova. Ifumaneka e https://esawebb.org/news/weic2404/?lang
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