Tojikistonda olib borilgan kuzatuvlar natijalari asosida 67P/Churyumov–Gerasimenko kometasi yadrosidan gaz-va chang zarralarining chiqarilish tezliklarini tadqiq qilish
Annotatsiya
2021-yil 5–8-oktabr kunlari Tojikiston Milliy fanlar akademiyasi Astrofizika institutining Sangloh Xalqaro astronomik observatoriyasida 67P/Churyumov–Gerasimenko kometasini kuzatish asosida olingan raqamli tasvirlar tahlil qilindi.
R filtri va 180 soniyali ekspozitsiya bilan amalga oshirilgan batafsil tahlilda gaz-va chang oqimlari (jetlar) aniqlangan. Zarrachalarning chiqish tezligi Whipple usuli bo‘yicha, gaz-va chang zarrachalarining chiqarilish tezligi esa Jones usuli asosida aniqlandi. Jetlarning holati o‘zgarishiga asoslanib, kometa yadrosining o‘z o‘qi atrofida aylanish davri aniqlandi — u 11 soat 48 daqiqaga teng.
67P kometasining izofotalarini qurish orqali yadroning faolligi belgilandi. Izofotalar natijasida kometaning markazidan periferiyasigacha bo‘lgan yorqinlik taqsimoti aniqlandi hamda dum (xvost) yaqqol ko‘rinib turdi.
H₂O, CO, O₂ va CO₂ molekulalarining termik tezliklari aniqlandi, haroratning molekulyar massa bilan bog‘liqligi grafigi tuzildi. Fotometrik ishlov berish natijasida R filtri bo‘yicha 67P kometasining fotometrik yadrosi o‘lchami 4,51 km, yadroning hajmi — 22,587 km³, umumiy zichligi esa 4,51 g/sm³ deb aniqlandi.
Optik teleskop orqali olingan ushbu natijalar "Rosetta" kosmik apparati tomonidan olingan ma’lumotlarga juda yaqin ekani qayd etildi.
Mualliflar haqida
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