FORMATION OF QUASI-PERIODIC OSCILLATIONS IN THE SOLAR CORONA
Authors:
1.
Kalmyk State University named after B.B. Gorodovikov
2.
Kalmyk State University named after B. B. Gorodovikov
3.
Kalmyk State University named after B.B. Gorodovikov
4.
Kalmyk State University named after B.B. Gorodovikov
Type:
Сonference article
Published:
27.12.2024
Subject area:
523.9
52
53
520
521
523
524
52-1
52-6
41.00
29.35
29.31
29.33
29.27
29.05
03.06.01
03.05.01
03.04.03
2
223
614
6135
SCI004000
SCI005000
52
53
520
521
523
524
52-1
52-6
41.00
29.35
29.31
29.33
29.27
29.05
03.06.01
03.05.01
03.04.03
2
223
614
6135
SCI004000
SCI005000
Language:
English
Keywords:
Sun: corona, helioseismology, oscillations
Funding:
The Ministry of Science and Higher Education of the Russian Federation 075-03-2024-113
Abstract (English):
The dispersion of acoustic waves in the rarefied high-temperature plasma of the solar corona and its role in the propagation of disturbances occurring in the corona are analyzed. We believe that the quasi-periodic oscillations (QPOs) that are recorded when observing propagating disturbances in coronal holes and loops are formed as a result of the combined effect of dispersion and damping of compressive waves. Observations and wavelet analysis show that their spectra are continuous, where the periods are distinguished by corresponding maxima. The shape of spectrum is characteristic of localized disturbances. The study is based on the simple model of non-adiabatic waves in high-temperature plasma, taking into account the properties of thermal conductivity, radiative cooling and constant heating.
The dispersion of acoustic waves in the rarefied high-temperature plasma of the solar corona and its role in the propagation of disturbances occurring in the corona are analyzed. We believe that the quasi-periodic oscillations (QPOs) that are recorded when observing propagating disturbances in coronal holes and loops are formed as a result of the combined effect of dispersion and damping of compressive waves. Observations and wavelet analysis show that their spectra are continuous, where the periods are distinguished by corresponding maxima. The shape of spectrum is characteristic of localized disturbances. The study is based on the simple model of non-adiabatic waves in high-temperature plasma, taking into account the properties of thermal conductivity, radiative cooling and constant heating.
Keywords:
Sun: corona, helioseismology, oscillations
Sun: corona, helioseismology, oscillations
1. Banerjee D., Gupta G.R., Teriaca L., 2011, Space Science Reviews, 158, 2-4, p. 267
2. Berghmans D. and Clette F., 1999, Solar Physics, 186, 1-2, id. 207
3. Derteev S., Shividov N., Bembitov D., et al., 2023, Physics, 5, p. 215
4. Derteev S.B., Sapraliev M.E., Shividov N.K., et al., 2024, Solar Physics, 299, 10, id. 141
5. Gupta G.R., 2014, Astronomy \& Astrophysics, 568, id. A96
6. Krishna Prasad S., Banerjee D., Singh J., 2012, Solar Physics, 281, 1, id. 67
7. Mikhalyaev B.B., Derteev S.B., Shividov N.K., et al., 2023, Solar Physics, 298, 9, id. 102
8. Nakariakov V.M, Kolotkov D.Y., Kupriyanova E.G., et al., 2018, Plasma Physics and Controlled Fusion, 61, id. 014024
9. Roberts B., Edwin P.M., Benz A.O., 1984, Astrophysical Journal, 279, p. 857
