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Related papers: On Modeling the Kelvin--Helmholtz Instability in S…

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The Kelvin-Hemholtz (K-H) instability in the corona EUV jet is studied via 2.5 MHD numerical simulations. The jet results from magnetic reconnection due to the interation of the new emerging magnetic field and the pre-existing magnetic…

Solar and Stellar Astrophysics · Physics 2018-05-02 Tianle Zhao , Lei Ni , Jun Lin , Udo Ziegler

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

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

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…

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

The Kelvin-Helmholtz (KH) instability occurs in multiple heliospheric (solar-wind stream interfaces, planetary magnetospheres, cometary tails, heliopause flanks) and interstellar (protoplanetary disks, relativistic jets, neutron star…

Solar and Stellar Astrophysics · Physics 2026-03-03 Shishir Biswas , Masaru Nakanotani , Dinshaw S. Balsara , Vladimir Florinski , Merav Opher

We have performed magneto-hydrodynamic simulations of relativistic jets from supermassive blackholes over a few tens of kpc for a range of jet parameters. One of the primary aims were to investigate the effect of different MHD instabilities…

High Energy Astrophysical Phenomena · Physics 2020-09-30 Dipanjan Mukherjee , Gianluigi Bodo , Andrea Mignone , Paola Rossi , Bhargav Vaidya

Kelvin-Helmholtz {instability induced} turbulence is one promising mechanism by which loops in the solar corona can be heated by MHD waves. In this paper we present an analytical model of the dissipation rate of {Kelvin-Helmholtz…

Solar and Stellar Astrophysics · Physics 2020-07-20 Andrew Hillier , Tom Van Doorsselaere , Konstantinos Karampelas

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…

Solar and Stellar Astrophysics · Physics 2021-12-15 Thomas Howson , Ineke De Moortel , David Pontin

It is well established now that the solar atmosphere, from photosphere to the corona and the solar wind is a highly structured medium. Satellite observations have confirmed the presence of steady flows. Here, we investigate the parallel…

Solar and Stellar Astrophysics · Physics 2015-05-13 I. Zhelyazkov

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

We study Kelvin-Helmholtz (KH) instability at the interface of a disc and corona system by doing a linear perturbation analysis. The disc is assumed to be thin, however, the corona is considered to be nearly quasispherical because of its…

Astrophysics of Galaxies · Physics 2015-05-18 Mohsen Shadmehri , Perikles Rammos

Transversal oscillations of spicules axes may be related to the propagation of magnetohydrodynamic waves along them. These waves may become unstable and the instability can be of the Kelvin-Helmholtz type. We use the dispersion relation of…

Solar and Stellar Astrophysics · Physics 2015-06-23 A. Ajabshirizadeh , H. Ebadi , R. E. Vekalati , K. Molaverdikhani

The purpose of this study is to analyze the dynamical role of a radiation field on the growth rate of the unstable Kelvin - Helmholtz (KH) perturbations. As a first step toward this purpose, the analyze is done in a general way,…

Astrophysics of Galaxies · Physics 2015-06-04 Mohsen Shadmehri , Zahra Enayati , Mahdi Khajavi

We present the results of simulations of the development of the Kelvin-Helmholtz (KH) instability in a cooled, slab symmetric system. The parameters were chosen to approximate the physical conditions typically found in jets from young…

Astrophysics · Physics 2007-05-23 T. P. Downes , T. P. Ray

Current sheets (CSs), long stretching structures of magnetic reconnection above solar flare loops, are usually observed to oscillate, their origins, however, are still puzzled at present. Based on a high-resolution 2.5-dimensional MHD…

Solar and Stellar Astrophysics · Physics 2023-09-11 Yulei Wang , Xin Cheng , Zining Ren , Mingde Ding

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,…

Solar and Stellar Astrophysics · Physics 2017-11-22 Thomas Howson , Ineke De Moortel , Patrick Antolin

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

We study the conditions under which high mode magnetohydrodynamic (MHD) waves propagating on a rotating jet emerging from the filament eruption on 2013 April 10--11 can became unstable against the Kelvin--Helmholtz instability (KHI). The…

Solar and Stellar Astrophysics · Physics 2018-06-06 Ivan Zhelyazkov , Ramesh Chandra

The Kelvin-Helmholtz (KH) instability occurring in a single shear flow configuration that is embedded in a uniform flow-aligned magnetic field, is revisited by means of high resolution two-dimensional (2D) magnetohydrodynamic (MHD)…

Astrophysics · Physics 2009-11-10 H. Baty , R. Keppens , P. Comte