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相关论文: Detection of kink oscillations in solar coronal lo…

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The ubiquity of recently discovered low-amplitude decayless kink oscillations of plasma loops allows for the seismological probing of the corona on a regular basis. In particular, in contrast to traditionally applied seismology which is…

太阳与恒星天体物理 · 物理学 2019-11-06 Sergey A. Anfinogentov , Valery. M. Nakariakov

The energy balance in the corona of the Sun is the key to the long-standing coronal heating dilemma, which could be potentially revealed by observational studies of decayless kink oscillations of coronal plasma loops. A bundle of very long…

太阳与恒星天体物理 · 物理学 2023-08-11 Sihui Zhong , Valery M. Nakariakov , Yuhu Miao , Libo Fu , Ding Yuan

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

Convolutional neural network (CNN) has been widely exploited for simultaneous and proportional myoelectric control due to its capability of deriving informative, representative and transferable features from surface electromyography (sEMG).…

信号处理 · 电气工程与系统科学 2020-12-02 Tianzhe Bao , Syed Ali Raza Zaidi , Shengquan Xie , Pengfei Yang , Zhiqiang Zhang

The driving and excitation mechanisms of decay-less kink oscillations in coronal loops remain under debate. We aim to quantify and provide simple observational constraints on the photospheric driving of oscillating coronal loops in a few…

Using the multilayer convolutional neural network (CNN), we can detect the quantum phases in random electron systems, and phase diagrams of two and higher dimensional Anderson transitions and quantum percolations as well as disordered…

无序系统与神经网络 · 物理学 2021-05-11 Tomohiro Mano , Tomi Ohtsuki

Coronal seismology is extensively used to estimate properties of the corona, e.g. the coronal magnetic field strength are derived from oscillations observed in coronal loops. We present a three-dimensional coronal simulation including a…

太阳与恒星天体物理 · 物理学 2015-09-23 Feng Chen , Hardi Peter

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

Aims. We construct a new analytical model of a solar coronal loop that is embedded in a gravitationally stratified and magnetically confined atmosphere. On the basis of this analytical model, we devise a numerical model of solar coronal…

太阳与恒星天体物理 · 物理学 2015-03-25 K. Murawski , A. Solov'ev , J. Kraskiewicz , A. K. Srivastava

Decayless kink oscillations are omnipresent in the solar atmosphere and a viable candidate for coronal heating. Though there have been extensive studies of decayless oscillations in coronal loops with a few hundred Mm lengths, the…

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…

This work investigates the decayless kink oscillations of solar coronal loops and examines possible changes in their behaviour in active regions (ARs) before powerful solar flares (M- and X-class) and in the absence of powerful flares. To…

太阳与恒星天体物理 · 物理学 2025-11-10 A. B. Nechaeva , I. V. Zimovets , I. N. Sharykin , S. A. Anfinogentov

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…

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

Observations on 2011 August 9 of an X6.9-class flare in active region (AR) 11263 by the Atmospheric Imaging Assembly (AIA) on-board the Solar Dynamics Observatory (SDO), were followed by a rare detection of vertical kink oscillations in a…

太阳与恒星天体物理 · 物理学 2015-10-14 Leon Ofman , Marzia Parisi , Abhishek K. Srivastava

Convolutional neural networks (CNNs) have been successfully employed in recent years for the detection of radiological abnormalities in medical images such as plain x-rays. To date, most studies use CNNs on individual examinations in…

机器学习 · 统计学 2018-10-11 Ruggiero Santeramo , Samuel Withey , Giovanni Montana

A new method for automated coronal loop tracking, in both spatial and temporal domains, is presented. Applying this technique to TRACE data, obtained using the 171 Angstrom filter on 1998 July 14, we detect a coronal loop undergoing a 270s…

天体物理学 · 物理学 2009-11-13 D. B. Jess , M. Mathioudakis , R. Erdelyi , G. Verth , R. T. J. McAteer , F. P. Keenan

Decayless kink oscillations of plasma loops in the solar corona may contain an answer to the enigmatic problem of solar and stellar coronal heating. The polarisation of the oscillations gives us a unique information about their excitation…

We develop a reliable, fully automatic method for the detection of coronal holes, that provides consistent full-disk segmentation maps over the full solar cycle and can perform in real-time. We use a convolutional neural network to identify…

太阳与恒星天体物理 · 物理学 2021-08-09 R. Jarolim , A. M. Veronig , S. Hofmeister , S. G. Heinemann , M. Temmer , T. Podladchikova , K. Dissauer

Kink oscillations are ubiquitously observed in solar coronal loops, their understanding being crucial in the contexts of coronal seismology and atmospheric heating. We study kink modes supported by a straight coronal loop embeded in an…

太阳与恒星天体物理 · 物理学 2024-02-20 Mijie Shi , Bo Li , Shengju Yuan
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