Acoustic Waves in a High-Temperature Plasma II. Damping and Instability

Mikhalyaev, B. B.; Derteev, S. B.; Shividov, N. K.; Sapraliev, M. E.; Bembitov, D. B.

doi:10.1007/s11207-023-02196-5

Cited by 3 publications

(1 citation statement)

References 65 publications

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“…(2) Для функции излучения Λ мы используем приближенное аналитическое описание в виде кубических сплайнов, данное в работе[4]. Для анализа колебаний используется дисперсионное уравнение, приведенное в работе[5].В качестве примера рассмотрим волны в плазме с температурой1.25 MK, что соответствует условиям наблюдения в линии 193 Å [2-3]. На рисунке 1 показаны дисперсионные кривые для плотности частиц 1.7 10 см .…”

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Quasi-Periodic Oscillations in the Solar Corona

Shividov,

Derteev,

Sapraliev

et al. 2023

Proceedings of the 27th All-Russia Conference on Solar and Solar-Terrestrial Physics

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Quasi-Periodic Oscillations in the Solar Corona

Shividov,

Derteev,

Sapraliev

et al. 2023

Proceedings of the 27th All-Russia Conference on Solar and Solar-Terrestrial Physics

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Acoustic Waves in a High-Temperature Plasma III. Two-Periodic Disturbances

Derteev,

Sapraliev,

Shividov

et al. 2024

Sol Phys

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Formation of quasi-periodic oscillations in the solar corona

Derteev,

Sapraliev,

Shividov

et al. 2024

Modern Astronomy: From the Early Universe to Exoplanets and Black Holes

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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.

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Acoustic Waves in a High-Temperature Plasma II. Damping and Instability

Cited by 3 publications

References 65 publications

Quasi-Periodic Oscillations in the Solar Corona

Quasi-Periodic Oscillations in the Solar Corona

Acoustic Waves in a High-Temperature Plasma III. Two-Periodic Disturbances

Formation of quasi-periodic oscillations in the solar corona

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