Iqela lamazwe ngamazwe lezazi ngeenkwenkwezi likwazile ukwenza oko qinisekisa ngokubonakalayo okokuqala ukuba inkwenkwezi inokugqabhuka ngokudutyulwa kabini, into eyenzekileyo ukuza kuthi ga ngoku kodwa ayizange ibonwe ngokuthe ngqo. Intsalela ehlalutyiweyo, eyaziwa ngokuba I-SNR 0509-67.5, yabanjwa kusetyenziswa iTelescope enkulu yaseYurophu yaseMzantsi Observatory, ibonelela ngemifanekiso ephambili esetyenziselwe ukuchonga iipateni ezahlukileyo eziphuma kolu dubulo kabini.
Kangangeminyaka, ukufa kwezinye iinkwenkwezi kwakuqondwa njengesiganeko esinobundlobongela, kodwa idatha epapashwe kwijenali. Nature Astronomy ukutshintsha kakhulu imbono ebesinayo kwi supernovae ethile. Uhlalutyo lwe-SNR 0509-67.5, a Umnyama omhlophe eyayisele iwacimile amafutha ayo, iye yavumela izazinzulu Fumana okokuqala imikhondo ethe ngqo yeziqhushumbisi ezimbini ezilandelelanayo kwiintsalela ze-supernova efanayo.
Ngokutsho kwabaphandi, oku kufunyaniswayo kubeka i ezinye zeziganeko ezinamandla kwindalo yonke kwaye ivula umnyango wokuqonda ngakumbi ukubunjwa kwezinto ezibalulekileyo ebomini, njengentsimbi. Uhlobo Ia supernovae, njengale ixutyushwa apha, inendima ebalulekileyo ekulinganiseni imigama kwindalo iphela yaye iye yasebenza njengesiseko sokufumanisa isiganeko sokukhawulezisa ekwandeni kwendalo kwendalo.
UPriyam Das, umfundi wePhD kwiYunivesithi yaseNew South Wales, ugxininisa ukuba "Ugqabhuko-dubulo olumhlophe lube ziziqwengana eziphambili kwinzululwazi yeenkwenkwezi yanamhlanje", nangona esona sizathu sokuba ezinye zazo ziqhutywe zihlale zingasonjululwanga. Le nkqubela phambili inika ukukhanya kwindlela esele ingaqondakali kwaye iqinisekisa ukuba, ngamanye amaxesha, ukuqhafaza akwenzeki xa inkwenkwezi ifikelela kumda obunzima, kodwa kunokuba ngaphambi nangezigaba ezibini ezihlukeneyo.
Yile ndlela i-double stellar detonation eyenzekayo
Ngokwesiko, iingcali zachaza oko Uhlobo Ia supernovae yenzeka xa incinci emhlophe, inxalenye ye inkqubo yokubini, yafunxa izinto ezivela kwiqabane layo inkwenkwezi de yagqitha kumda obalulekileyo, ibangela ugqabhuko-dubulo. Nangona kunjalo, ngedatha yamva nje eqokelelweyo, enye i-hypothesis ifumana amandla: Umaleko we-helium osuswe kwenkwenkwezi yesibini unokungazinzi kwaye ubangele ugqabhuko-dubulo lokuqalaLo maza othusayo okuqala agqithiselwa kumbindi we-white dwarf kwaye, ngemizuzwana nje, aqalise ukudubula okwesibini, okukhulu.
Umfanekiso ofunyenwe kutshanje uye wavumela ukuchonga ubukho bomaleko oqinileyo we-calcium kwintsalela ye-SNR 0509-67.5, into esele ixelwe kwangaphambili yimifuziselo ebonakalayo yento kodwa engazange ibonwe ngokuthe ngqo. Ezi maleko, zibonwa njengehalo eluhlaza okwesibhakabhaka, Bangumkhondo ocacileyo wesixhobo sokuqhafaza kabiniUkusetyenziswa kwe-MUSE (Multi Unit Spectroscopic Explorer) isixhobo kwi-VLT ibe luncedo ekufezekiseni eli nqanaba leenkcukacha ekuqwalaseleni.
Oku kufumaneka kuthetha ukuba Ezinye iincinci ezimhlophe zinokugqabhuka ngaphambi kokuba zifike kumda wobunzima be-Chandrasekhar, nto leyo esinyanzela ukuba sihlole iinkcazo-bungcali malunga ne-stellar evolution kunye nobomi bezi zinto ezixineneyo.
Kutheni oku kuqhushumba kubaluleke kangaka
Iziganeko zokudubuleka kabini kuHlobo lwe-Ia supernovae azincedi nje ukucacisa umjikelo wobomi beenkwenkwezi, kodwa zikwabalulekile umlinganiselo wemigama yeenkwenkweziUkukhanya rhoqo oku kugqabhuka, kungakhathaliseki ukuba kwenzeka phi, kubenza uhlobo oluthile ipateni yereferensi ukubala umlinganiselo wendalo iphela. Enkosi kubo, kwakunokwenzeka ukufumanisa ukuba ukwanda kwe-cosmic kukhawuleza kunokuba bekucingelwa ngaphambili, kwaye le mpumelelo yamkelwa IBhaso leNobel kwiFiziksi ngo-2011.
Uphononongo lukwaqaqambisa ixabiso elikhulu lokubonwayo kunye nenzululwazi yesakhiwo sobutyobo obujongwayo. Ulungelelwaniso olugqibeleleyo lwezinto eziveliswe luqhushumbo lubonisa ngokuthe ngqo ubunzima bezi ziganeko ze-cosmic, enika izazi ngeenkwenkwezi ithuba elikhethekileyo lokuhlalutya inkqubo yokuqhuma ukusuka kumanqanaba okuqala ukuya kukusasazwa kokugqibela kwezixhobo.
Ukuqonda ukuba i-white dwarfs iqhuma njani kwaye nini ekugqibeleni kusivumela ukuba sisulungekise izixhobo esizisebenzisayo ukuphanda ukubunjwa komnyele kunye nokusasazwa kwezinto ezinzima kwi-cosmos.
Ukufumana ubungqina obubonakalayo obuthe ngqo kwintsalela ye-SNR 0509-67.5 imele ukuqinisekiswa okuqinileyo ukuba ukuchithwa kabini akunakwenzeka kuphela, kodwa ngokwenene kwenzeka kwindalo. Oku kunceda ukusombulula enye yeepuzzle ezizingileyo kwi-astrophysics yanamhlanje kwaye igxininisa impembelelo yenkqubela phambili yezobuchwepheshe-ezifana nokusetyenziswa kwe-VLT kunye ne-MUSE spectrograph-ekuqondeni kwethu indalo yonke.
Oku kufunyaniswayo kuphawula ukuqhubela phambili okubalulekileyo ekuqondeni kwethu ezi ziganeko kwaye, kwixesha elizayo, kuya kuphucula ukulinganisa kunye neemodeli ezichaza i-stellar evolution kunye nokuqhuma okukhulu.
