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:
UDC 523.9
UDC 52
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAK SCI004000 Astronomy
BISAK SCI005000 Physics / Astrophysics
UDC 52
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAK SCI004000 Astronomy
BISAK SCI005000 Physics / Astrophysics
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
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