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Context. Recent observations of solar prominences show the presence of turbulent flows that may be caused by Kelvin-Helmholtz instabilites (KHI). However, the observed flow velocities are below the classical threshold for the onset of KHI…

Solar and Stellar Astrophysics · Physics 2016-09-21 David Martínez-Gómez , Roberto Soler , Jaume Terradas

The nonlinear magnetic Kelvin-Helmholtz instability (KHi), and the turbulence it creates, appears in many astrophysical systems. This includes those systems where the local plasma conditions are such that the plasma is not fully ionised,…

Solar and Stellar Astrophysics · Physics 2020-01-29 Andrew Hillier

Observations have shown the presence of the Kelvin-Helmholtz instability (KHi) in solar prominences. Effects due to partial ionization of the prominence plasma may influence the KHi onset. We study the triggering of the KHi in an interface…

Solar and Stellar Astrophysics · Physics 2025-05-06 Llorenç Melis , Roberto Soler

Studies have shown that in sheared $\mathbf{E}\times\mathbf{B}$ flows in an inhomogeneous ionospheric plasma, the gradient drift (GDI) or the Kelvin-Helmholtz (KHI) instability may grow. This work examines the conditions that cause one of…

Plasma Physics · Physics 2021-06-02 C. Rathod , B. Srinivasan , W. Scales

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…

The linear MHD Kelvin-Helmholtz instability (KHI) in an anisotropic plasma concerning the direction of an external magnetic field is examined in detail. For this purpose, the MHD equations are used to describe the motion of plasma as a…

Solar and Stellar Astrophysics · Physics 2022-04-12 N. S. Dzhalilov , R. Ismayilli

The Kelvin-Helmholtz instability (KHI) can occur when there is a relative motion between two adjacent fluids. In the case of magnetized plasma, the shear velocity must exceed the local Alfv\'{e}n speed for the instability to develop. The…

Solar and Stellar Astrophysics · Physics 2026-04-21 Leon Ofman , Olga Khabarova , Ryun-Yong Kwon , Yogesh , Eyal Heifetz , Katariina Nykyri

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…

Solar and Stellar Astrophysics · Physics 2018-07-10 Xiaohong Li , Jun Zhang , Shuhong Yang , Yijun Hou , Robert Erdelyi

Context: In the context of the solar coronal heating problem, one possible explanation for the high coronal temperature is the release of energy by magnetohydrodynamic (MHD) waves. The energy transfer is believed to be possible, among…

Solar and Stellar Astrophysics · Physics 2021-06-23 Michaël Geeraerts , Tom Van Doorsselaere

Hydrodynamical instabilities are believed to power some of the small scale (0.1-10 pc) turbulence and chemical mixing in the interstellar medium. Identifying such instabilities has always been difficult but recent observations of a wavelike…

Astrophysics of Galaxies · Physics 2015-06-11 Olivier Berne , Yosuke Matsumoto

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…

Plasma Physics · Physics 2026-05-06 Silvia Ferro , Fabio Bacchini , Giuseppe Arrò , Francesco Pucci , Pierre Henri

The Kelvin-Helmholtz (KH) instability is commonly found in many astrophysical, laboratory, and space plasmas. It could mix plasma components of different properties and convert dynamic fluid energy from large scale structure to smaller…

Solar and Stellar Astrophysics · Physics 2019-11-06 Ding Yuan , Yuandeng Shen , Yu Liu , Xueshang Feng , Rony Keppens

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…

Solar and Stellar Astrophysics · Physics 2018-05-16 M. Bogdanova , I. Zhelyazkov , R. Joshi , R. Chandra

This study explores the generation of Electrostatic (ES) Electron Kelvin-Helmholtz instability (EKHI) in collisionless plasma with a step-function electron velocity shear akin to that developed in the electron diffusion region in magnetic…

Plasma Physics · Physics 2025-03-04 H. Che

Ambient interstellar material may become entrained in outflows from massive stars as a result of shear flow instabilities. We study the linear theory of the Kelvin - Helmholtz instability, the simplest example of shear flow instability, in…

Astrophysics · Physics 2009-11-10 C. Watson , E. G. Zweibel , F. Heitsch , E. Churchwell

The Kelvin-Helmholtz (KH) instability is studied in a non-Newtonian dusty plasma with an experimentally verified model [Phys. Rev. Lett. {\bf 98}, 145003 (2007)] of shear flow rate dependent viscosity. The shear flow profile used here is a…

Plasma Physics · Physics 2015-06-17 D. Banerjee , S. Garai , M. S. Janaki , N. Chakrabarti

The main aim of this submission is to investigate the effects of some parameters like wave number, shear velocity, magnetic field and temperature for the growth rate of the magnetized Kelvin-Helmholtz instability (KHI) with incessant…

Solar and Stellar Astrophysics · Physics 2019-08-14 Huseyin Cavus , G. A. Hoshoudy

Using data obtained by the high resolution CRisp Imaging SpectroPolarimeter instrument on the Swedish 1-m Solar Telescope, we investigate the dynamics and stability of quiet-Sun chromospheric jets observed at disk center. Small-scale…

Solar and Stellar Astrophysics · Physics 2016-10-26 D. Kuridze , T. V. Zaqarashvili , V. Henriques , M. Mathioudakis , F. P. Keenan , A. Hanslmeier

Kelvin-Helmholtz instability (KHI) is widely spread in nature on scales from micrometer up to Galactic one. This instability refers to the growth of perturbation of an interface between two parallel streams of Newtonian fluids with…

Fluid Dynamics · Physics 2021-09-15 Narsing K. Jha , Victor Steinberg

Transport coefficients in highly ionised plasmas like the intra-cluster medium (ICM) are still ill-constrained. They influence various processes, among them the mixing at shear flow interfaces due to the Kelvin-Helmholtz instability (KHI).…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-17 E. Roediger , R. P. Kraft , P. Nulsen , E. Churazov , W. Forman , M. Brueggen , R. Kokotanekova
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