Solnechno-Zemnaya Fizika Solnechno-Zemnaya Fizika Солнечно-земная физика 2712-9640 57734 10.12737/szf-92202302 Результаты исследований Results of current research Результаты исследований CAII lines in a quiet region on the Sun I. Dynamic processes in the solar atmosphere Линии CaII в спокойной области на Солнце. I. Динамические процессы в солнечной атмосфере Турова Ирина Петровна Turova Irina Petrovna turova@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Григорьева София Абдусалимовна Grigoryeva Sofiya Abdusalimovna sgrig@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Ожогина Ольга Александровна Ozhogina Olga Aleksandrovna ozhog@iszf.irk.ru Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation 29 06 2023 29 06 2023 9 2 12 25 15 03 2023 17 04 2023 https://zh-szf.ru/en/nauka/article/57734/view

Исследовались колебательные процессы в спокойном Солнце вне корональной дыры на разных уровнях солнечной хромосферы. Использованы спектроскопические наблюдения линий ионизованного кальция (K, H и 849.8 нм), полученные на Автоматизированном солнечном телескопе (АСТ) Саянской солнечной обсерватории. Был проведен спектральный анализ временных серий для ряда параметров линий. Выполнено сравнение результатов, полученных в данной работе, с результатами нашего исследования колебательных процессов в спокойных областях, находящихся в основании корональной дыры. Показано, что мощность колебаний выше в области спокойного Солнца вне корональной дыры. При этом имеется общая для исследованных областей тенденция уменьшения мощности колебаний с высотой для всех диапазонов частот, кроме низкочастотного, в большинстве хромосферных структур. В структурах с пониженным магнитным полем наблюдается рост мощности с высотой до высот нижней хромосферы с некоторым уменьшением ее к верхней хромосфере.

We have studied oscillation processes in the quiet Sun outside a coronal hole at different levels of the solar chromosphere. The study was based on spectroscopic observations of ionized calcium lines (K, H, and 849.8 nm) obtained by the Sayan Solar Observatory’s Automated Solar Telescope (AST). Spectral analysis of time series for some parameters of the lines has been carried out. We have compared the results of this work with the results of our study of oscillation processes in quiet regions located at the base of a coronal hole. The oscillation power was found to be higher in the region of the quiet Sun outside a coronal hole. At the same time, for the regions under study there is a common tendency for the oscillation power to decrease with height for all frequency ranges, except for the low-frequency one, in most chromospheric structures. In structures with a weak magnetic field, the power increases with height to the lower chromosphere and decreases somewhat to the upper chromosphere.

 хромосфера контуры линий CaII колебательные процессы chromosphere CaII line profiles oscillation processes Работа выполнена в рамках базового финансирования программы ФНИ II.16. The work was financially supported by Basic Research Program II.16.

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