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相关论文: Decayless oscillations in 3D coronal loops excited…

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In recent years, the decay-less regime of standing transverse oscillations in coronal loops has been the topic of many observational and numerical studies, focusing on their physical characteristics, as well as their importance for coronal…

太阳与恒星天体物理 · 物理学 2020-07-29 Konstantinos Karampelas , Tom Van Doorsselaere

Decayless kink oscillations are frequently observed in solar coronal loops and are considered potential contributors to coronal heating. Despite the ubiquity of this wave phenomenon, its driving mechanism remains unclear. Studies to derive…

太阳与恒星天体物理 · 物理学 2026-03-04 Sudip Mandal , Cosima Breu , Hardi Peter

The relatively large-amplitude decaying regime of transverse oscillations of coronal loops has been known for two decades and interpreted in terms of MHD kink modes of cylindrical plasma waveguides. Recent observational analysis has…

太阳与恒星天体物理 · 物理学 2020-01-15 A. N. Afanasyev , T. Van Doorsselaere , V. M. Nakariakov

Understanding the effects of the lower solar atmosphere on the spectrum of standing kink oscillations of coronal loops, in both the decaying and decayless regime, is essential for developing more advanced tools for coronal seismology. We…

太阳与恒星天体物理 · 物理学 2025-01-07 Konstantinos Karampelas , Daye Lim , Tom Van Doorsselaere , Yuhang Gao

Recent observations with the Atmospheric Imaging Assembly (AIA) instrument on the SDO spacecraft have revealed the existence of decayless coronal kink oscillations. These transverse oscillations are not connected to any external phenomena…

太阳与恒星天体物理 · 物理学 2019-06-06 K. Karampelas , T. Van Doorsselaere , D. J. Pascoe , M. Guo , P. Antolin

Instabilities in oscillating loops are believed to be essential for dissipating the wave energy and heating the solar coronal plasma. Our aim is to study the development of the Kelvin-Helmholtz (KH) instability in an oscillating loop that…

太阳与恒星天体物理 · 物理学 2024-06-18 Konstantinos Karampelas , Tom Van Doorsselaere , Mingzhe Guo , Timothy Duckenfield , Gabriel Pelouze

Decayless kink oscillations, characterized by their lack of decay in amplitude, have been detected in coronal loops of varying scales in active regions, quiet Sun and coronal holes. Short-period (< 50 s) decayless oscillations have been…

Standing slow-mode waves have been recently observed in flaring loops by the Atmospheric Imaging Assembly (AIA) of the Solar Dynamics Observatory (SDO). By means of the coronal seismology technique transport coefficients in hot ($\sim$10…

太阳与恒星天体物理 · 物理学 2018-07-04 Tongjiang Wang , Leon Ofman , Xudong Sun , Sami K Solanki , Joseph M Davila

Kink oscillations of coronal loops, i.e., standing kink waves, is one of the most studied dynamic phenomena in the solar corona. The oscillations are excited by impulsive energy releases, such as low coronal eruptions. Typical periods of…

Rapidly decaying long-period oscillations often occur in hot coronal loops of active regions associated with small (or micro-) flares. This kind of wave activity was first discovered with the SOHO/SUMER spectrometer from Doppler velocity…

太阳与恒星天体物理 · 物理学 2021-10-01 Tongjiang Wang , Leon Ofman , Ding Yuan , Fabio Reale , Dmitrii Y. Kolotkov , Abhishek K. Srivastava

Decayless kink oscillations, which are nearly omnipresent in the solar corona, are believed to be driven by continuously operating energy supply. In this letter, we investigate an external continuous excitation of an apparent decayless…

太阳与恒星天体物理 · 物理学 2023-11-29 Dong Li , Zhentong Li , Fanpeng Shi , Yang Su , Wei Chen , Fu Yu , Chuan Li , Ye Qiu , Yu Huang , Zongjun Ning

Recent observations have revealed two types of decayless transverse oscillations in short coronalloops: one with short periods scaling with loop lengths, and the other with longer periods that exhibit a peak at around 5 min in the period…

太阳与恒星天体物理 · 物理学 2023-08-29 Yuhang Gao , Mingzhe Guo , Tom Van Doorsselaere , Hui Tian , Samuel J. Skirvin

We aim to study the standing fundamental kink mode of coronal loops in the nonlinear regime, investigating the changes in energy evolution in the cross-section and oscillation amplitude of the loop which are related to nonlinear effects, in…

太阳与恒星天体物理 · 物理学 2016-11-02 N. Magyar , T. Van Doorsselaere

Coronal oscillations offer insight into energy transport and driving in the solar atmosphere. Knowing its polarisation state helps constrain a wave's displacement and velocity amplitude, improving estimates of wave energy flux and…

太阳与恒星天体物理 · 物理学 2025-03-10 T. J. Duckenfield , D. B. Jess , R. J. Morton , S. Jafarzadeh

We aim to study the influence of radiative cooling on the standing kink oscillations of a coronal loop. Using the FLASH code, we solved the 3D ideal magnetohydrodynamic equations. Our model consists of a straight, density enhanced and…

太阳与恒星天体物理 · 物理学 2015-10-30 N. Magyar , T. Van Doorsselaere , A. Marcu

We investigate the decayless regime of coronal kink oscillations recently discovered in the Solar Dynamics Observatory (SDO)/AIA data. In contrast to decaying kink oscillations that are excited by impulsive dynamical processes, this type of…

太阳与恒星天体物理 · 物理学 2015-11-18 S. A. Anfinogentov , V. M. Nakariakov , G. Nisticò

Kink oscillations in coronal loops have been extensively studied for their potential contributions to coronal heating and their role in plasma diagnostics through coronal seismology. A key focus is the strong damping of large-amplitude kink…

太阳与恒星天体物理 · 物理学 2025-08-25 Sihui Zhong , Andrew Hillier , Iñigo Arregui

Solar coronal loops are commonly subject to oscillations. Observations of coronal oscillations are used to infer physical properties of the coronal plasma using coronal seismology. Excitation and evolution of oscillations in coronal loops…

太阳与恒星天体物理 · 物理学 2021-03-17 P. Kohutova , A. Popovas

Coronal loop oscillations are common phenomena in the solar corona, which are often classified as decaying and decayless oscillations. Using the high-resolution observation measured by the Extreme Ultraviolet Imager (EUI) onboard the Solar…

太阳与恒星天体物理 · 物理学 2023-02-15 Dong Li , David M. Long

Kink oscillations are frequently observed in coronal loops. This work aims to numerically clarify the influence of loop curvature on horizontally and vertically polarized kink oscillations. Working within the framework of ideal MHD, we…

太阳与恒星天体物理 · 物理学 2024-04-09 Mingzhe Guo , Tom Van Doorsselaere , Bo Li , Marcel Goossens
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