Wani binciken falaki na baya-bayan nan ya ƙalubalanci fahimtar al’ada game da mutuwar manyan taurari a cikin yankin sararin samaniya na Terra. Bayanan Observações sun nuna cewa wani supergiant mai launin rawaya, wanda yake a cikin Andrômeda galaxy, ya ƙare zagayowar rayuwarsa ta hanyar rikiɗa kai tsaye zuwa wani rami mai baƙar fata, yana ƙetare yanayin supernova mai fashewa. Lamarin, wanda manyan na’urori masu inganci suka kama, ya bayyana tsarin rugujewar yanayin shiru da ba kasafai ake yi ba fiye da shekaru miliyan 2.5.
Masana ilmin taurari sun lura da abin da aka gano a matsayin M31-2014-DS1, wanda a hankali ya ɓace tsakanin 2014 zuwa 2022. Binciken bayanan haɗin gwiwa yana nuna cewa nauyi ya shawo kan karfin matsa lamba na ciki, ya ruguje kai tsaye.
Babban Instrumentos, irin su Telescópio Espacial James Webb (JWST) da Observatório Chandra, sun kasance masu mahimmanci wajen bayyana yanayin wannan taron a 2024. Rashin fitar da hasken X-ray da gano takamaiman sa hannu na infrared ya tabbatar da cewa babu irin fashewar da ake tsammani don tauraruwar wannan girman.
Hanyoyin sinadaran da tsarin ragowar
Binciken da aka yi a tsakiyar bakan infrared ya nuna wani tushe mai launin ja a daidai wurin da tauraron ya kasance yana haskakawa. Binciken Spectroscopic ya gano kasancewar kura mai sanyi da hadaddun kwayoyin halitta irin su sulfur dioxide da ruwa, wanda ke nuna cewa an fitar da wani bangare na ambulan wajen tauraro a hankali kafin ko lokacin rugujewar karshe.
Abubuwan da suka rage sun samar da tsari na musamman a kusa da ramin baki na jariri. Dados masu fasaha suna nuna takamaiman halaye na wannan mahalli mai kewaye:
- Kasancewar iskar kwayoyin da ke fadada a cikin sauri kusa da 100 km/s a cikin yankin ciki.
- Ƙirƙirar harsashi mai ƙura mai girma mai kama da girman Sistema Solar.
- Rage hasken tushen zuwa kusan kashi 7% na hasken tauraruwar iyaye.
- Gano shaye-shaye kamar CO da CO2 a cikin kayan da aka fitar.
Asalin girman tauraro, wanda aka kiyasta yana tsakanin 12 zuwa 13 sau na Sol, ya sami raguwa sosai yayin aikin. Sakamakon ɗan ƙaramin abu yana riƙe kusan maɗaukakin hasken rana guda biyar, yayin da sauran kayan an fitar da su ko kuma sun kasance a cikin faifai mai ƙarfi mai ƙarfi, wanda ke bayyana rashin tsananin radiation.
Tasiri ga taurarin juyin halitta
Este taron, wanda aka keɓance shi a matsayin “Supernova wanda ya gaza”, yana ba da shaida mai mahimmanci ga ƙirar ƙididdiga waɗanda ke hasashen cewa ba duka manyan taurari ke ƙarewa cikin fashe-fashe ba. Ilimin kimiyyar lissafi ya nuna cewa, a wasu jeri na yawa, nauyi yana hana jujjuyawan girgizar ciki wanda zai haifar da fashewar, ta tilastawa kwayoyin halitta su fada kan tsakiya.
Tabbatar da wannan tsarin a cikin Andrômeda galaxy yana inganta hasashe game da samuwar baƙar fata. Estimativas Bincike na kimiya ya nuna cewa kusan kashi 30 cikin 100 na rugujewar tauraro za su iya faruwa ta wannan hanyar, wanda hakan zai kawo sauyi sosai wajen kidayar kananan abubuwa a sararin samaniya.
Babban saka idanu da rashin makamashi
Tabbatar da abin da ya faru kuma ya dogara da abin da ba a gani ba. X_NM0__X X-ray ya duba yankin don gano yawan hayaki mai ƙarfi a cikin baƙar fata wanda ke cinye kwayoyin halitta. Rashin gano kowane tushen hasken X-ray yana ƙarfafa ka’idar cewa haɓakar kayan sabon baƙar fata ba shi da yawa kuma yana faruwa a hankali.
Ci gaba da lura da yankin zai ba wa masana kimiyya damar bin juyin halitta na hasken haske da kuma watsar da ƙura. Matsakaicin kusanci na Andrômeda yana ba da ingantaccen dakin gwaje-gwaje na halitta don nazarin waɗannan abubuwan da suka faru na “fadowa” na dindindin, yana taimakawa wajen daidaita fahimtar yadda ragowar taurari ke cika taurarin taurari na Grupo Local.
