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相关论文: Particle orbits at the magnetopause: Kelvin-Helmho…

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This study presents three-dimensional (3D) resistive Hall-magnetohydrodynamic simulations of the Kelvin-Helmholtz instability (KHI) dynamics at Earth's magnetospheric flanks during northward interplanetary magnetic field periods. By…

空间物理 · 物理学 2024-05-24 Silvia Ferro , Matteo Faganello , Francesco Califano , Fabio Bacchini

The Kelvin-Helmholtz instability (KHI) is a nonlinear shear-driven instability that develops at the interface between shear flows in plasmas. KHI has been inferred in various astrophysical plasmas and has been observed in situ at the…

We study here the arising of Kelvin--Helmholtz Instability (KHI) in one fast jet of 2014 April 16 observed by the Atmospheric Imaging Assembly (AIA) on board Solar Dynamics Observatory (SDO) in different UV and EUV wavelengths. The…

太阳与恒星天体物理 · 物理学 2018-05-16 M. Bogdanova , I. Zhelyazkov , R. Joshi , R. Chandra

Aims: We quantify the effects of twisted magnetic fields on the development of the magnetic Kelvin-Helmholtz instability (KHI) in transversely oscillating coronal loops. Methods: We modelled a fundamental standing kink mode in a straight,…

太阳与恒星天体物理 · 物理学 2017-11-22 Thomas Howson , Ineke De Moortel , Patrick Antolin

Simulations and observations of the low-latitude magnetosphere-magnetosheath boundary layer indicate that the Kelvin-Helmholtz instability (KHI) drives vortex structures that enhance plasma mixing and magnetic reconnection, influencing…

等离子体物理 · 物理学 2026-05-06 Silvia Ferro , Fabio Bacchini , Giuseppe Arrò , Francesco Pucci , Pierre Henri

Kelvin-Helmholtz (KH) vortices are widely observed in astrophysics and heliophysics, including at Jovian and terrestrial magnetopauses, the Martian sheath-ionosphere boundary, the heliopause, and within stellar accretion disks. These…

空间物理 · 物理学 2025-11-04 Zhongwei Yang , Can Huang , Xiaocheng Guo , Riku Jarvinen , Binbin Tang , Wence Jiang , Hui Li , Chi Wang

A couple of milliseconds after the merger of a binary system of neutron stars can play a fundamental role in amplifying the comparatively low initial magnetic fields into magnetar strengths. The basic mechanism responsible for this…

高能天体物理现象 · 物理学 2026-01-23 Harry Ho-Yin Ng , Jin-Liang Jiang , Luciano Rezzolla

Kelvin-Helmholtz Instabilities (KHI) along contact discontinuities in galaxy clusters have been used to constrain the strength of magnetic fields in galaxy clusters, following the assumption that, as magnetic field lines drape around the…

高能天体物理现象 · 物理学 2022-03-07 Urmila Chadayammuri , John ZuHone , Paul Nulsen , Daisuke Nagai , Helen Russell

We present a three-dimensional study of the plasma dynamics at the flank magnetopause of the Earth's magnetosphere during mainly northward interplanetary magnetic field (IMF) periods. Two-fluid simulations show that the initial magnetic…

空间物理 · 物理学 2018-12-26 S. Fadanelli , M. Faganello , F. Califano , S. S. Cerri , F. Pegoraro , B. Lavraud

This work investigates the short wavelength stability of the magnetopause between a rapidly-rotating, supersonic, dense accretion disc and a slowly-rotating low-density magnetosphere of a magnetized star. The magnetopause is a strong shear…

高能天体物理现象 · 物理学 2015-05-14 R. V. E. Lovelace , M. M. Romanova , W. I. Newman

Context. The magnetic Kelvin-Helmholtz instability (KHI) has been proposed as a means of generating magnetohy- drodynamic turbulence and encouraging wave energy dissipation in the solar corona, particularly within transversely oscillating…

太阳与恒星天体物理 · 物理学 2021-12-15 Thomas Howson , Ineke De Moortel , David Pontin

Features of the response of pickup ions (PUIs) to the Kelvin--Helmholtz instability (KHI) on the heliopause (HP) are examined by means of two-dimensional hybrid simulations. We assume the supersonic neutral solar wind as the source of PUIs…

空间物理 · 物理学 2021-07-21 Ken Tsubouchi

We present two-dimensional (2D) particle-in-cell simulations of a magnetized, collisionless, relativistic pair plasma subjected to combined velocity and magnetic-field shear, a scenario typical at intermittent structures in plasma…

高能天体物理现象 · 物理学 2025-10-27 Tsun Hin Navin Tsung , Gregory R. Werner , Dmitri A. Uzdensky , Mitchell C. Begelman

We use particle-in-cell, fully electromagnetic, plasma kinetic simulation to study the effect of external magnetic field on electron scale Kelvin-Helmholtz instability (ESKHI). The results are applicable to collisionless plasmas when e.g.…

等离子体物理 · 物理学 2024-09-19 D. Tsiklauri

Kelvin-Helmholtz instability (KHI) is a basic physical process in fluids and magnetized plasmas, with applications successfully modelling e.g. exponentially growing instabilities observed at magnetospheric and heliospheric boundaries, in…

太阳与恒星天体物理 · 物理学 2018-07-10 Xiaohong Li , Jun Zhang , Shuhong Yang , Yijun Hou , Robert Erdelyi

Recent observations support the propagation of a number of magnetohydrodynamic (MHD) modes which, under some conditions, can become unstable and the developing instability is the Kelvin--Helmholtz instability (KHI). In its nonlinear stage…

太阳与恒星天体物理 · 物理学 2019-05-28 Ivan Zhelyazkov , Ramesh Chandra , Reetika Joshi

Using a full kinetic, implicit particle-in-cell code, iPiC3D, we studied the properties of plasma kinetic turbulence, such as would be found at the interface between the solar wind and the Earth magnetosphere at low latitude during…

等离子体物理 · 物理学 2014-12-04 Koen Kemel , Pierre Henri , Giovanni Lapenta , Francesco Califano , Stefano Markidis

The magnetopause is the key region in space for the transfer of solar wind mass, momentum, and energy into the magnetosphere. During the last decade, our understanding of the structure and dynamics of Earth's magnetopause and its boundary…

空间物理 · 物理学 2025-07-17 Hiroshi Hasegawa

The Kelvin-Helmholtz instability is a ubiquitous physical process in ordinary fluids and plasmas, frequently observed also in space environments. In this paper, kinetic effects at proton scales in the nonlinear and turbulent stage of the…

空间物理 · 物理学 2023-07-12 A. Settino , F. Malara , O. Pezzi , M. Onofri , D. Perrone , F. Valentini

Particle energization in shear flows is invoked to explain non-thermal emission from the boundaries of relativistic astrophysical jets. Yet, the physics of particle injection, i.e., the mechanism that allows thermal particles to participate…

高能天体物理现象 · 物理学 2021-02-10 Lorenzo Sironi , Michael E. Rowan , Ramesh Narayan
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