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Weakly magnetized, relativistic collisionless shock waves are not only the natural offsprings of relativistic jets in high-energy astrophysical sources, they are also associated with some of the most outstanding displays of energy…

高能天体物理现象 · 物理学 2020-12-17 A. Vanthieghem , M. Lemoine , I. Plotnikov , A. Grassi , M. Grech , L. Gremillet , G. Pelletier

The viscously dominated, low Reynolds' number dynamics of multi-phase, compacting media can lead to nonlinear, dissipationless/dispersive behavior when viewed appropriately. In these systems, nonlinear self-steepening competes with wave…

斑图形成与孤子 · 物理学 2014-01-31 Nicholas K. Lowman , Mark A. Hoefer

We derive the equations of motion of relativistic magnetohydrodynamics from the Boltzmann equation using the method of moments. We consider a locally electrically neutral system composed of two particle species with opposite charges, with…

高能天体物理现象 · 物理学 2026-02-25 Khwahish Kushwah , Gabriel Silveria Denicol

We present a meshless method for magnetohydrodynamics by evolving the vector potential of magnetic fields. A novel scheme and numerical techniques are developed to restrict the divergence of magnetic field, based on the Meshless Finite…

天体物理仪器与方法 · 物理学 2022-09-28 Xiongbiao Tu , Qiao Wang , Haonan Zheng , Liang Gao

Starting with a brief introduction into the basics of relativistic fluid dynamics, I discuss our current knowledge of a relativistic theory of fluid dynamics in the presence of (mostly shear) viscosity. Derivations based on the generalized…

高能物理 - 唯象学 · 物理学 2010-03-02 Paul Romatschke

A weak wave turbulence theory is developed for two-dimensional (2D) magnetohydrodynamics (MHD). We derive and analyze the kinetic equation describing the three-wave interactions of pseudo-Alfv\'en waves. Our analysis is greatly helped by…

等离子体物理 · 物理学 2015-06-12 Natalia Tronko , Sergey V. Nazarenko , Sebastien Galtier

We construct and analyze a model of the relativistic steady-state magnetohydrodynamic (MHD) rarefaction that is induced when a planar symmetric flow (with one ignorable Cartesian coordinate) propagates under a steep drop of the external…

等离子体物理 · 物理学 2015-06-22 Konstantinos Sapountzis , Nektarios Vlahakis

The physical quantities in a gas should vary continuously across a shock. However, the physics inherent in the compressible Euler equations is insufficient to describe the width or structure of the shock. We demonstrate the existence of…

偏微分方程分析 · 数学 2026-01-13 Dallas Albritton , Jacob Bedrossian , Matthew Novack

In this paper, we are concerned with the large time behavior of viscous shock wave for the convective porous-media equation with degenerate viscosity. We get the regularity of the solution for general initial data and prove the shock wave…

偏微分方程分析 · 数学 2024-01-08 Yechi Liu

We use the AdS/CFT correspondence to study first-order relativistic viscous magneto-hydrodynamics of (2+1) dimensional conformal magnetic fluids. It is shown that the first order magneto-hydrodynamics constructed following Landau and…

高能物理 - 理论 · 物理学 2009-11-19 Evgeny I. Buchbinder , Alex Buchel

Turbulence in rotating Magneto-hydrodynamic systems is studied theoretically and numerically. In the linear limit, when the velocity and magnetic perturbations are small, the system supports two types of waves. When the rotation effects are…

等离子体物理 · 物理学 2020-01-08 Nicholas Bell , Sergey Nazarenko

Linear relativistic anisotropic magnetohydrodynamic waves are investigated for an Imperfect fluid. Consideration is carried out for the plasma with finite bulk viscosity. Conditions for growth and decay of these waves are obtained in…

等离子体物理 · 物理学 2007-05-23 Sushil Kumar Singh , Subhash Kumar

The dynamics of a relativistic blast wave propagating through magnetized medium is considered taking into account possible inhomogeneities of density and magnetic field and additional energy supply. Under the simplifying assumption of a…

天体物理学 · 物理学 2009-11-07 Maxim Lyutikov

The first-order textbook formulations of relativistic viscous hydrodynamics are unstable and acausal. These shortcomings may be rectified by using effective theories which maintain stability and causality. In this dissertation, which is…

高能物理 - 理论 · 物理学 2025-09-30 Raphael E. Hoult

Shock waves are supersonic disturbances propagating in a fluid and giving rise to dissipation and drag. Weak shocks, i.e., those of small amplitude, can be well described within the hydrodynamic approximation. On the other hand, strong…

高能物理 - 理论 · 物理学 2010-12-24 Sergei Khlebnikov , Martin Kruczenski , Georgios Michalogiorgakis

We construct and study global solutions for the 3-dimensional incompressible MHD systems with arbitrary small viscosity. In particular, we provide a rigorous justification for the following dynamical phenomenon observed in many contexts:…

偏微分方程分析 · 数学 2016-03-29 Ling-Bing He , Li Xu , Pin Yu

We formulate a relativistic hydrodynamic theory for fluids with spin and intrinsic dilation charges. Using an entropy-current analysis, we derive constitutive relations featuring a bulk viscosity and a dilation conductivity governing the…

高能物理 - 理论 · 物理学 2026-03-19 Zhong-Hua Zhang , Xi-Hu Lv , Xu-Guang Huang

On the basis of simple principles we derive and investigate the equations of relativistic plasma magnetohydrodynamics (MHD) in an arbitrary gravitational field. An exact solution describing the motion of magnetoactive plasma against the…

广义相对论与量子宇宙学 · 物理学 2011-01-06 Yu. G. Ignatyev

In high-quality conductors, the hydrodynamic regime of electron transport has been recently realized. In this work we theoretically investigate magnetotransport of a viscous electron fluid in samples with electron-impermeable obstacles. We…

介观与纳米尺度物理 · 物理学 2023-08-01 P. S. Alekseev , A. P. Dmitriev

The recent discovery that some of the coefficients of the viscosity tensor are negative is shown to invalidate the hydrodynamic approach to the vortex liquid phase of a type-II superconductor. A satisfactory theory requires retention of all…

凝聚态物理 · 物理学 2009-10-22 T. Blum , M. A. Moore