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相关论文: Forced oscillations of coronal loops driven by EIT…

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The generation of large-scale zonal flows by small-scale electrostatic drift waves in electron temperature gradient(ETG) driven turbulence model is considered. The generation mechanism is based on the modulational instability of a finite…

等离子体物理 · 物理学 2015-06-26 Yu. A. Zaliznyak , A. I. Yakimenko , V. M. Lashkin

Periodically forced, oscillatory fluid flows have been the focus of intense research for decades due to their richness as a nonlinear dynamical system and their relevance to applications in transportation, aeronautics, and energy…

流体动力学 · 物理学 2020-02-03 Benjamin Herrmann , Philipp Oswald , Richard Semaan , Steven L. Brunton

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

We observe intensity oscillations along coronal fan loops associated with the active region AR 11428. The intensity oscillations were triggered by blast waves which were generated due to X-class flares in the distant active region AR 11429.…

太阳与恒星天体物理 · 物理学 2017-09-20 V. Pant , A. Tiwari , D. Yuan , D. Banerjee

We investigate the dynamics of unidirectional semi-infinite chains of type-I oscillators that are periodically forced at their root node, as an archetype of wave generation in neural networks. In previous studies, numerical simulations…

适应与自组织系统 · 物理学 2016-03-08 Bastien Fernandez , Stanislav M. Mintchev

The collective transverse coronal loop oscillations seem to be detected in the observational studies. In this regard, Luna et al. (2009, ApJ, 692, 1582) modeled the collective kinklike normal modes of several cylindrical loops system using…

太阳与恒星天体物理 · 物理学 2019-09-02 Narges Fathalian , Hossein Safari

The center of mass motion of trapped ions and neutral atoms is suitable for approximation by a time-dependent driven quantum harmonic oscillator whose frequency and driving strength may be controlled with high precision. We show the time…

量子物理 · 物理学 2024-03-25 E. García Herrera , F. Torres-Leal , B. M. Rodríguez-Lara

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

Elasto-inertial turbulence (EIT) is a new, two-dimensional chaotic flow state observed in polymer solutions with possible connections to inertialess elastic turbulence and drag-reduced Newtonian turbulence. In this Letter, we argue that the…

流体动力学 · 物理学 2020-10-14 Jacob Page , Yves Dubief , Rich R. Kerswell

We investigate time-dependent electron current through a quantum dot under external drive (pulses), coupled to leads at zero bias. Simple analytic expressions for current, generated by periodic pulses of any shape, are obtained without any…

介观与纳米尺度物理 · 物理学 2021-07-02 Shmuel Gurvitz

We study non-axisymmetric oscillations of a straight magnetic tube with an elliptic cross-section and density varying along the tube. The governing equations for kink and fluting modes in the thin tube approximation are derived. We found…

太阳与恒星天体物理 · 物理学 2015-05-20 R. J. Morton , M. S. Ruderman

The dynamics of a non-autonomous oscillator in which the phase and frequency of the external force depend on the dynamical variable is studied. Such a control of the phase and frequency of the external force leads to the appearance of…

混沌动力学 · 物理学 2020-03-18 Darina Krylosova , Evgeny Seleznev , Nataliya Stankevich

We present a series of numerical simulations aimed at understanding the nature and origin of turbulence in coronal loops in the framework of the Parker model for coronal heating. A coronal loop is studied via reduced magnetohydrodynamics…

太阳与恒星天体物理 · 物理学 2015-03-13 A. F. Rappazzo , M. Velli , G. Einaudi

In this paper, we apply the Rayleigh-Ritz Variational Scheme for studying the transverse oscillations of a magnetic flux tube. The flux tube is considered in low-$\beta$ solar coronal condition. The perturbations decomposed into…

太阳与恒星天体物理 · 物理学 2019-09-12 N. Fathalian , H. Safari , S. Nasiri

Since the discovery of quasi-periodic propagating oscillations with periods of order three to ten minutes in coronal loops with TRACE and EIT (later with EUVI and EIS), they have been almost universally interpreted as evidence for…

太阳与恒星天体物理 · 物理学 2015-05-19 Bart De Pontieu , Scott W. McIntosh

Using the Wigner-Weyl mapping of quantum mechanics to phase space we consider exactly the quantum mechanics of an harmonic oscillator driven by an external white noise force or whose frequency is time dependent, either adiabatically or…

量子物理 · 物理学 2015-08-11 T. B. Smith

Low-frequency longitudinal oscillations of a flaring coronal loop are studied numerically. In the recent work of Nakariakov et al., Astron. and Astrophys., 414, L25-L28 (2004) it has been shown that the time dependences of density and…

天体物理学 · 物理学 2009-11-10 D. Tsiklauri , V. M. Nakariakov , T. D. Arber , M. J. Aschwanden

Twisted coronal loops in the solar atmosphere may become kink-unstable when their magnetic field lines are sufficiently twisted. This instability can trigger magnetic reconnection, leading to the emission of electromagnetic radiation, which…

太阳与恒星天体物理 · 物理学 2025-10-07 James Stewart , Philippa K. Browning , Mykola Gordovskyy

A focused acoustic standing wave creates a Hookean potential well for a small sphere and can levitate it stably against gravity. Exposing the trapped sphere to a second transverse traveling sound wave imposes an additional acoustical force…

软凝聚态物质 · 物理学 2021-02-03 Mohammed A. Abdelaziz , David G. Grier

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