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We examine the role of Alfven wave damping in heating the plasma in the magnetic funnels of magnetospheric accretion models of young stars. We study four different damping mechanisms of the Alfven waves: nonlinear, turbulent,…

天体物理学 · 物理学 2015-05-27 M. J. Vasconcelos , V. Jatenco-Pereira , R. Opher

We theoretically investigate the interplay between magnetohydrodynamic (MHD) waves and shear flows in a partially ionized solar plasma, focusing on the energy exchange mediated by the flow and the transformation between wave modes. We…

太阳与恒星天体物理 · 物理学 2025-08-07 Miquel Cantallops , Roberto Soler

Compressive plasma turbulence is investigated at sub-ion scales in the solar wind using both the Fast Plasma Investigation (FPI) instrument on the Magnetospheric MultiScale mission (MMS), as well as using calibrated spacecraft potential…

We develop a two dimensional, self-consistent, compressible fluid model to study evolution of Alfvenic modes in partially ionized astrophysical and space plasmas. The partially ionized plasma consists mainly of electrons, ions and…

空间物理 · 物理学 2015-05-14 Dastgeer Shaikh

When waves damp or amplify on resonant particles in a plasma, the nonresonant particles experience a recoil force that conserves the total momentum between the particles and electromagnetic fields. This force is important to understand, as…

等离子体物理 · 物理学 2023-02-23 I. E. Ochs , N. J. Fisch

Interfacial waves arising in a two-phase swirling flow driven by a low-frequency rotating magnetic field (RMF) are studied. At low RMF frequencies, of the order of 1-10 Hz, the oscillatory part of the induced Lorenz force becomes comparable…

流体动力学 · 物理学 2024-01-09 Gerrit Maik Horstmann , Yakov Nezihovski , Thomas Gundrum , Alexander Gelfgat

Since surface acoustic waves (SAW) are often generated on substrates to which nanostrips are periodically attached, it is very important to consider the effect of interface between the deposited strip and the substrate surface, which is an…

应用物理 · 物理学 2022-01-26 Wenlou Yuan , Akira Nagakubo , Hirotsugu Ogi

Propagating slow magneto-acoustic waves are commonly observed in different coronal structures but are most prominent in active region fan loops. Their rapid damping with damping lengths of the order of a wavelength has been investigated in…

太阳与恒星天体物理 · 物理学 2025-06-09 Suraj K. Tripathy , S. Krishna Prasad , D. Banerjee

A two-dimensional generalized hydrodynamics (GH) model is developed to study the full spectrum of both longitudinal and transverse dust acoustic waves (DAW) in strongly coupled complex (dusty) plasmas, with memory-function-formalism being…

等离子体物理 · 物理学 2015-05-19 Nitin Upadhyaya , Z. L. Miskovic , L. -J. Hou

A classic application of coronal seismology uses transverse oscillations of waveguides to obtain estimates of the magnetic field strength. The procedure requires information on the density of the structures. Often, it ignores the damping of…

太阳与恒星天体物理 · 物理学 2019-05-08 I. Arregui , M. Montes-Solis , A. Asensio Ramos

In this work is examined a new modeling way of describing the continuous absorption of electromagnetic (EM) radiation in a dense partially ionized hydrogen plasmas with electron densities about $5\cdot10^{18}$ cm$^{-3}$ -…

太阳与恒星天体物理 · 物理学 2018-03-14 A. A. Mihajlov , N. M. Sakan , V. A. Sreckovic , Y. Vitel

A new version of the invariant imbedding theory for the propagation of coupled waves in inhomogeneous media is applied to the mode conversion of high frequency electromagnetic waves into electrostatic modes in cold, magnetized and…

等离子体物理 · 物理学 2009-11-11 Kihong Kim , Dong-Hun Lee

Existing theoretical results for attenuation of surface waves propagating on water of random fluctuating depth are shown to over predict the rate of decay due to the way in which ensemble averaging is performed. A revised approach is…

流体动力学 · 物理学 2026-03-05 Lloyd Dafydd , Richard Porter

Fast magnetosonic waves in a magnetically-dominated plasma are investigated. In the pulsar wind, these waves may transport a significant fraction of the energy flux. It is shown that the nonlinear steepening and subsequent formation of…

天体物理学 · 物理学 2009-11-07 Y. E. Lyubarsky

A phenomenon analogous to the conical refraction well-known in the crystalooptics and crystaloacoustics is considered for the magnetohydrodynamical waves in a collisionless plasma with anisotropic thermal pressure. Imposing the most general…

plasm-ph · 物理学 2009-10-30 David Tsiklauri

Building on a previous study that analyses surface waves in magnetic slabs embedded in a non-magnetic external environment, in this study the model is generalised and external magnetic fields are added. The slab is assumed to be thin, with…

太阳与恒星天体物理 · 物理学 2020-07-29 William Oxley , Noémi Kinga Zsámberger , Róbert Erdélyi

Unraveling the origin of proton beams and ion Bernstein waves is important to understanding kinetic dissipation in the solar wind. Here we focus on their generation mechanisms, rather than their well-studied roles in instabilities and…

等离子体物理 · 物理学 2026-05-25 Chuanpeng Hou , Huirong Yan , Siqi Zhao

We describe new exact results for a model of ionization of a bound state, induced by an oscillating potential. In particular we have obtained exact expressions, in the form of readily computable rapidly convergent sums, for the energy…

数学物理 · 物理学 2017-10-17 Ovidiu Costin , Rodica D. Costin , Joel L. Lebowitz

Alfv\'enic waves have gained renewed interest since the existence of ubiquitous propagating kink waves were discovered in the corona. {It has long been suggested that Alfv\'enic} waves play an important role in coronal heating and the…

太阳与恒星天体物理 · 物理学 2019-05-15 Ajay K. Tiwari , Richard J. Morton , Stephane Régnier , James A. McLaughlin

Filtering surface acoustic wave (SAW) signals of specified frequencies depending on the strength of an external magnetic field in a magnetostrictive material has garnered significant interest due to its potential scientific and industrial…