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相关论文: Velocity-Space Cascade in Magnetized Plasmas: Nume…

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We present results from three-dimensional hybrid-kinetic simulations of Alfv\'enic turbulence in a high-beta, collisionless plasma. The key feature of such turbulence is the interplay between local wave--wave interactions between the…

高能天体物理现象 · 物理学 2023-03-03 Lev Arzamasskiy , Matthew W. Kunz , Jonathan Squire , Eliot Quataert , Alexander A. Schekochihin

Two-dimensional fluid simulations of interchange turbulence for geometry and parameters relevant for the scrape-off layer of confined plasmas are presented. We observe bursty ejection of particles and heat from the bulk plasma in the form…

等离子体物理 · 物理学 2009-11-10 Odd Erik Garcia , Volker Naulin , Anders H. Nielsen , Jens Juul Rasmussen

The relationship between a decaying plasma turbulence and proton fire hose instabilities in a slowly expanding plasma is investigated using three-dimensional (3-D) hybrid expanding box simulations. We impose an initial ambient magnetic…

空间物理 · 物理学 2019-10-10 P. Hellinger , L. Matteini , S. Landi , L. Franci , A. Verdini , E. Papini

Proton temperature anisotropies between the directions parallel and perpendicular to the mean magnetic field are usually observed in the solar wind plasma. Here, we employ a high-resolution hybrid particle-in-cell simulation in order to…

空间物理 · 物理学 2016-04-12 Luca Franci , Petr Hellinger , Lorenzo Matteini , Andrea Verdini , Simone Landi

In this paper we show results of numerical simulations for the turbulence in the interstellar medium. These results were obtained using a Riemann solver-free numerical scheme for high-Mach number hyperbolic equations. Here we especially…

星系天体物理 · 物理学 2011-02-11 R. Kissmann , J. Kleimann , H. Fichtner , R. Grauer

The question of how nonlinear interactions redistribute the energy of fluctuations across available degrees of freedom is of fundamental importance in the study of turbulence and transport in magnetized weakly collisional plasmas, ranging…

等离子体物理 · 物理学 2015-05-19 G. G. Plunk , T. Tatsuno

Using $10,\!080^3$ grid simulations, we analyze scale-dependent alignment in driven, compressible, no net-flux magnetohydrodynamic turbulence. The plasma self-organizes into localized, strongly aligned regions. Alignment spans all primitive…

等离子体物理 · 物理学 2025-04-23 James R. Beattie , Amitava Bhattacharjee

This chapter reviews the recent progress made mainly during the last two decades on wave turbulence in magnetized plasmas (MHD, Hall MHD and electron MHD) in the incompressible and compressible cases. The emphasis is made on homogeneous and…

太阳与恒星天体物理 · 物理学 2015-03-19 Sebastien Galtier

On the framework of relativistic force-free magnetohydrodynamic (MHD) turbulence, we explore the fundamental properties of strong and weak turbulent cascades using high-resolution numerical simulations in the presence of a uniform…

高能天体物理现象 · 物理学 2026-01-14 Na-Na Gao , Jian-Fu Zhang , Jungyeon Cho

Exploration of plasma dynamics in space, including turbulence, is entering a new era of multi-satellite constellation measurements that will determine fundamental properties with unprecedented precision. Familiar but imprecise…

Kinetic simulations of relativistic turbulence have significantly advanced our understanding of turbulent particle acceleration. Recent progress has highlighted the need for an updated acceleration theory that can account for acceleration…

高能天体物理现象 · 物理学 2024-03-19 Zachary Davis , Luca Comisso , Dimitrios Giannios

Observations and modelling suggest that the fluctuations in magnetised plasmas exhibit scale-dependent anisotropy, with more energy in the fluctuations perpendicular to the mean magnetic field than in the parallel fluctuations and the…

太阳与恒星天体物理 · 物理学 2013-04-22 T. Laitinen , S. Dalla , J. Kelly , M. Marsh

Recent fully nonlinear, kinetic three-dimensional simulations of magnetic reconnection [Daughton et al. 2011] evolve structures and exhibit dynamics on multiple scales, in a manner reminiscent of turbulence. These simulations of…

等离子体物理 · 物理学 2015-06-15 E. Leonardis , S. C. Chapman , W. Daughton , V. Roytershteyn , H. Karimabadi

Kinetic-range turbulence in magnetized plasmas and, in particular, in the context of solar-wind turbulence has been extensively investigated over the past decades via numerical simulations. Among others, one of the widely adopted reduced…

等离子体物理 · 物理学 2017-05-24 S. S. Cerri , L. Franci , F. Califano , S. Landi , P. Hellinger

Plasma turbulence plays a critical role in the transport of energy from large-scale magnetic fields and plasma flows to small scales, where the dissipated turbulent energy ultimately leads to heating of the plasma species. A major goal of…

等离子体物理 · 物理学 2023-10-05 Sarah A. Conley , Gregory G. Howes , Andrew J. McCubbin

We report on three-dimensional direct numerical simulation of wave turbulence on the free surface of a magnetic fluid subjected to an external horizontal magnetic field. A transition from capillarywave turbulence to anisotropic…

等离子体物理 · 物理学 2023-09-29 Evgeny Kochurin , Guillaume Ricard , Nikolay Zubarev , Eric Falcon

In this work, the recently introduced fluid-like treatment of the phase-space has been further extended and some interesting outcomes have been presented. A modified form of the Vlasov equation has been presented which describes the…

等离子体物理 · 物理学 2024-10-31 Allen Lobo , Vinod Kumar Sayal

Recent studies provide evidence for the multi-scale nature of magnetic turbulence in the plasma sheet. Wavelet methods represent modern time series analysis techniques suitable for the description of statistical characteristics of…

空间物理 · 物理学 2016-09-08 W. Baumjohann , R. Nakamura , A. Runov , M. Volwerk , T. L. Zhang , A. Balogh

The complex interplay between turbulence, magnetic fields, and self-gravity leads to the formation of molecular clouds out of the diffuse interstellar medium (ISM). One avenue of studying this interplay is by analyzing statistical features…

星系天体物理 · 物理学 2017-02-22 Frank Otto , Weiguang Ji , Hua-bai Li

A grand unified field $\mathcal{M}^{\mu\nu}$ is constructed from Maxwell's Field tensor and appropriately modified flow field, both non-minimally coupled to gravity, to analyze the dynamics of hot charged fluids in curved background…

广义相对论与量子宇宙学 · 物理学 2015-06-23 Chinmoy Bhattacharjee , Rupam Das , S. M. Mahajan