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Two of the most widely observed and yet most puzzling features of the Sun's magnetic field are coronal loops that are smooth and laminar and prominences/filaments that are strongly sheared. These two features would seem to be quite…

太阳与恒星天体物理 · 物理学 2017-01-25 Kalman J. Knizhnik , Spiro K. Antiochos , C. Richard DeVore

It is shown that a vorticity, constructed from spin field of a quantum spinning plasma, combines with the classical generalized vorticity (representing the magnetic and the velocity fields) to yield a new grand generalized vorticity that…

等离子体物理 · 物理学 2015-05-30 Swadesh M. Mahajan , Felipe A. Asenjo

In the presence of magnetic helicity, inverse transfer from small to large scales is well known in magnetohydrodynamic (MHD) turbulence and has applications in astrophysics, cosmology, and fusion plasmas. Using high resolution direct…

宇宙学与河外天体物理 · 物理学 2015-02-23 Axel Brandenburg , Tina Kahniashvili , Alexander G. Tevzadze

Electron plasmas confined by an external magnetic field exhibit variations in a two-dimensional plane orthogonal to the confining magnetic field. A nonlinear fluid simulation code to investigate the properties of 2-D electron plasma wave…

等离子体物理 · 物理学 2009-11-13 Dastgeer Shaikh , P. K. Shukla

It is well established that the magnetically structured solar atmosphere supports the propagation of MHD waves along various kind of jets including also the solar wind. It is well-known as well that under some conditions, namely high enough…

太阳与恒星天体物理 · 物理学 2020-03-11 I. Zhelyazkov , Z. Dimitrov , M. Bogdanova

We have studied the large scale dynamo process forced with helical magnetic energy. The magnetically driven dynamo is not so well studied as kinetically forced dynamo. It has been thought to represent the amplification of magnetic field in…

等离子体物理 · 物理学 2021-09-21 Kiwan Park , Myung-Ki Cheoun

The behavior of spinning particles in the stationary homogeneous magnetic field is considered and all types of trajectories for massive and massless particles are found. It is shown that spin of particles in a magnetic field is always…

经典物理 · 物理学 2016-01-11 Alexander N. Tarakanov

When the nature of a magnetosonic pulse propagating in a bounded magnetized plasma slab is successively transformed from compression to rarefaction and vice-versa upon reflection at a plasma-vacuum interface, both the energy and the…

等离子体物理 · 物理学 2021-06-02 Renaud Gueroult

Plasma turbulence occurs ubiquitously in space and astrophysical plasmas, mediating the nonlinear transfer of energy from large-scale electromagnetic fields and plasma flows to small scales at which the energy may be ultimately converted to…

等离子体物理 · 物理学 2018-02-28 Gregory G. Howes , Sofiane Bourouaine

A convection-driven MHD dynamo in a rotating spherical shell, with clearly defined structural elements in the flow and magnetic field, is simulated numerically. Such dynamos can be called deterministic, in contrast to those explicitly…

天体物理学 · 物理学 2008-11-26 A. V. Getling , R. D. Simitev , F. H. Busse

Magnetohydrodynamics (MHD) is a subject concerned with the dynamics of electrically conducting fluids (plasma) and can be applied in electric power generation. As a unique technology for producing direct-current electricity without moving…

等离子体物理 · 物理学 2023-12-15 Osama A. Marzouk

We consider a dusty plasma, in which the dust particles have a magnetic dipole moment. A Hall-MHD type of model, generalized to account for the intrinsic magnetization, is derived. The model is shown to be energy conserving, and the energy…

等离子体物理 · 物理学 2009-10-26 Jens Zamanian , Gert Brodin , Mattias Marklund

It is shown that in magnetohydrodynamics, the shapes of the magnetic energy and magnetic helicity spectra can influence whether the magnetic helicity resistive dissipation time scale is longer, equal to, or shorter than that of magnetic…

天体物理学 · 物理学 2015-06-24 Eric G. Blackman

Self-organization properties of sustained magnetized plasma are applied to selected solar data to understand solar magnetic fields. Torsional oscillations are speed-up and slow-down bands of the azimuthal flow that correlate with the solar…

太阳与恒星天体物理 · 物理学 2018-07-26 T. R. Jarboe , T. E. Benedett , C. J. Everson , C. J. Hansen , A. C. Hossack , K. D. Morgan , B. A. Nelson , J. M. Penna , D. A. Sutherland

Possibility of magnetic energy accumulation inside silicon nanoparticles at the conditions of resonant optical responses is investigated theoretically. The magnetic field distributions inside silicon nanocylinders with and without coaxial…

We present a reduced magnetohydrodynamic (MHD) mathematical model describing the dynamical behavior of highly conducting plasmas with frozen-in magnetic fields, constrained by the assumption that, there exists a frame of reference, where…

等离子体物理 · 物理学 2022-02-23 Igor V Sokolov , Lulu Zhao , Tamas I Gombosi

Electric propulsion is now a sucessfull method for primary propulsion of deep space long duration missions and for geosyncronous satellite attitude control. Closed Drift Plasma Thruster, so called Hall Thruster or SPT (stationary plasma…

A nonlinear two dimensional fluid model of whistler turbulence is developed that nonlinearly couples wave magnetic field with electron density perturbations. This coupling leads essentially to finite compressibility effects in whistler…

空间物理 · 物理学 2015-05-18 Dastgeer Shaikh

This paper reports an innovative concept of ``plasma fibre" using bright-core helicon plasma, inspired by its spatial and spectral similarities to the well-known optical fibre. Theoretical analyses are presented for both ideal case of…

等离子体物理 · 物理学 2025-11-03 Lei Chang , Zi-Chen Kan , Jing-Jing Ma , Saikat Chakraborty Thakur , Juan Francisco Caneses

A new plasma state has been investigated [C.~Akcay, J.~Finn, R.~Nebel and D.~Barnes, Phys.~Plasmas $\textbf{24}$, 052503 (2017)], with a uniform applied axial magnetic field in a periodic cylinder of length $L=2\pi R$, driven by helical…

等离子体物理 · 物理学 2018-01-17 Cihan Akçay , John M. Finn , Richard A. Nebel , Daniel C. Barnes