Structure of solar faculae

AA Solov'ev, EA Kirichek - Monthly Notices of the Royal …, 2019 - academic.oup.com
In solar facular regions (plages), three distinct classes of magnetic features are observed:
small-scale flux tubes, knots, and pores. Small flux tubes have granular scales; they are in …

Long-period quasi-periodic oscillations of a small-scale magnetic structure on the Sun

DY Kolotkov, VV Smirnova, PV Strekalova… - Astronomy & …, 2017 - aanda.org
Aims. Long-period quasi-periodic variations of the average magnetic field in a small-scale
magnetic structure on the Sun are analysed. The structure is situated at the photospheric …

Analysis of oscillatory modes of the magnetic field of solar facular formations

PV Strekalova, YA Nagovitsyn, VV Smirnova - Geomagnetism and …, 2018 - Springer
Quasi-periodical variations in the magnetic fields of long-living, small-scale magnetic
structures, solar facular formations (FFs), are analyzed. We used the method of Empirical …

Oscillations Accompanying a He i 10830 Å Negative Flare in a Solar Facula

AA Chelpanov, NI Kobanov - Solar Physics, 2018 - Springer
On 21 September 2012, we carried out spectral observations of a solar facula in the Si i
10827 Å, He i 10830 Å, and H α \upalpha spectral lines. Later, in the process of analyzing …

Oscillations Accompanying a He I 10830 Å Negative Flare in a Solar Facula II. Response of the Transition Region and Corona

NI Kobanov, AA Chelpanov - Solar Physics, 2019 - Springer
We studied oscillations related to flare SOL2012-09-21T02: 19 in the transition region and
chromosphere based on Reuven Ramaty High Energy Solar Spectroscopic Imager …

[PDF][PDF] CAII LINES IN A QUIET REGION ON THE SUN I. DYNAMIC PROCESSES IN THE SOLAR ATMOSPHERE

IP Turova, SA Grigoryeva, OA Ozhogina - Solar-Terrestrial Physics, 2023 - ru.iszf.irk.ru
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 …

On searching for observational manifestations of Alfvén waves in solar faculae

NI Kobanov, SA Chupin, AA Chelpanov - Astronomy Letters, 2017 - Springer
In an effort to detect torsional oscillations, we have studied the periodic half-width variations
for several spectral lines in solar faculae. The duration of the series being analyzed was …

Studying Ca ii K Line Profile Shapes and Dynamic Processes in the Solar Chromosphere at the Base of a Coronal Hole

SA Grigoryeva, IP Turova, OA Ozhogina - Solar Physics, 2016 - Springer
We study Ca ii K profiles in structural features of the quiet chromosphere and plages using
observations of two time series for two regions at the base of a coronal hole. One of the …

К поиску наблюдательных проявлений альвеновских волн в солнечных факелах

НИ Кобанов, СА Чупин, АА Челпанов - Письма в Астрономический …, 2017 - elibrary.ru
С целью обнаружения крутильных колебаний выполнены исследования периодических
вариаций полуширины нескольких спектральных линий в солнечных факелах …

Comparing the main oscillation characteristics in the solar chromosphere and magnetosphere based on studies made at ISTP SB RAS

AA Chelpanov, MA Chelpanov, NI Kobanov… - Solar-Terrestrial …, 2018 - elibrary.ru
The aim of this paper is to structure and extend the knowledge of solar chromospheric
sources of oscillations in the solar wind and their relationships with pulsations registered in …