Results 21 to 30 of about 43,284 (218)

Long-term evolution of decayless kink oscillations of solar coronal loops

open access: yesMonthly notices of the Royal Astronomical Society, 2022
Long-term evolution of instantaneous parameters of decayless kink oscillations of six solar coronal loops observed for longer than two hours each, is studied.
S. Zhong   +3 more
semanticscholar   +1 more source

Non-thermal line broadening due to braiding-induced turbulence in solar coronal loops [PDF]

open access: yesAstronomy & Astrophysics, 2020
Aims. Emission line profiles from solar coronal loops exhibit properties that are unexplained by current models. We investigate the non-thermal broadening associated with plasma heating in coronal loops that is induced by magnetic field line braiding ...
D. Pontin, H. Peter, L. P. Chitta
semanticscholar   +1 more source

Traveling kink oscillations of coronal loops launched by a solar flare [PDF]

open access: yesAstronomy & Astrophysics, 2023
We investigate the traveling kink oscillation triggered by a solar flare on 2022 September 29. The observational data is mainly measured by the Solar Upper Transition Region Imager (SUTRI), the Atmospheric Imaging Assembly (AIA), and the Spectrometer ...
Dong Li   +7 more
semanticscholar   +1 more source

Coronal Loop Detection Using Multiscale Convolutional Neural Networks

open access: yesThe Astrophysical Journal Supplement Series, 2023
Solar magnetic fields play an important role in many solar activities, such as the solar wind, coronal mass ejections, and coronal oscillation. Coronal loops are curvilinear structures in the solar atmosphere and are closely related to coronal magnetic ...
Yunzhi Wang, Bo Liang, Song Feng
doaj   +1 more source

High-order Harmonics of a Kink Wave and a Narrow Quasiperiodic Fast-propagating Wave Train Excited Simultaneously in a Plasma Resonator

open access: yesThe Astrophysical Journal, 2023
We present the observations of multimode kink waves and a narrow quasiperiodic fast-propagating (QFP) wave train in association with a jet on 2011 December 11.
Zhining Qu   +5 more
doaj   +1 more source

Formation of Solar Quiescent Coronal Loops through Magnetic Reconnection in an Emerging Active Region [PDF]

open access: yesAstrophysical Journal, 2021
Coronal loops are the building blocks of solar active regions. However, their formation mechanism remains poorly understood. Here we present direct observational evidence for the formation of coronal loops through magnetic reconnection as new magnetic ...
Zhenyong Hou   +8 more
semanticscholar   +1 more source

Quasi-periodic Fast Propagating Magnetoacoustic Waves during the Magnetic Reconnection Between Solar Coronal Loops [PDF]

open access: yesAstrophysical Journal, 2018
Employing Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA) multi-wavelength images, we have presented coronal condensations caused by magnetic reconnection between a system of open and closed solar coronal loops.
Leping Li   +7 more
semanticscholar   +1 more source

Helical Twisting Number and Braiding Linkage Number of Solar Coronal Loops [PDF]

open access: yesAstrophysical Journal, 2019
Coronal loops in active regions are often characterized by quasi-circular and helically twisted (sigmoidal) geometries, which are consistent with dipolar potential field (PF) models in the former case, and with nonlinear force-free field models with ...
M. Aschwanden
semanticscholar   +1 more source

A Possible Mechanism for the “Late Phase” in Stellar White-light Flares

open access: yesThe Astrophysical Journal, 2023
M dwarf flares observed by the Transiting Exoplanet Survey Satellite (TESS) sometimes exhibit a peak-bump light-curve morphology, characterized by a secondary, gradual peak well after the main, impulsive peak.
Kai E. Yang   +3 more
doaj   +1 more source

Steadiness of Coronal Heating

open access: yesThe Astrophysical Journal, 2023
The EUI instrument on the Solar Orbiter spacecraft has obtained the most stable, high-resolution images of the solar corona from its orbit with a perihelion near 0.4 au.
P. G. Judge
doaj   +1 more source

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