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相关论文: Global asymptotic solutions for relativistic MHD j…

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We present general and global analytical solutions, valid from pole to equator, for the asymptotic structure of non-relativistic, rotating, stationary, axisymmetric, polytropic, unconfined, perfect MHD winds. The asymptotic structure of…

天体物理学 · 物理学 2009-11-10 J. Heyvaerts , C. Norman

This paper is concerned with the asymptotic behaviors of global strong solutions to the incompressible non-resistive viscous magnetohydrodynamic (MHD) equations with large initial perturbations in two-dimensional periodic domains in…

偏微分方程分析 · 数学 2021-02-16 Fei Jiang , Song Jiang

Using relativistic, steady, axisymmetric, ideal magnetohydrodynamics (MHD) we analyze the super-Alfvenic regime of a pulsar wind by means of solving the momentum equation along the flow as well as in the transfield direction. Employing a…

天体物理学 · 物理学 2009-11-10 Nektarios Vlahakis

We show that the formal asymptotic limit for all rotating polytropic axisymmetric perfect MHD flows is a kinetic energy dominated wind which collimates to paraboloids around the symmetry axis. We reach this result by showing that another, a…

天体物理学 · 物理学 2009-11-10 J. Heyvaerts , C. Norman

We present equilibrium models of relativistic magnetised, infinite, axisymmetric jets with rotation propagating through an homogeneous, unmagnetised ambient medium at rest. The jet models are characterised by six functions defining the…

天体物理仪器与方法 · 物理学 2015-09-16 José-María Martí

This paper aims to establish the global well-posedness of the free boundary problem for the incompressible viscous resistive magnetohydrodynamic (MHD) equations. Under the framework of Lagrangian coordinates, a unique global solution exists…

偏微分方程分析 · 数学 2024-08-29 Wei Zhang , Jie Fu , Chengchun Hao , Siqi Yang

We consider axisymmetric relativistic jets with a toroidal magnetic field and an ultrarelativistic equation of state, with the goal of studying the lateral structure of jets whose pressure is matched to the pressure of the medium through…

天体物理学 · 物理学 2010-11-11 Nadia L. Zakamska , Mitchell C. Begelman , Roger D. Blandford

We present, for the first time, the structure of the axisymmetric force-free magnetosphere of an aligned rotating magnetic dipole, in the case in which there exists a sufficiently large charge density (whose origin we do not question) to…

天体物理学 · 物理学 2011-07-18 Ioannis Contopoulos , Demosthenes Kazanas , Christian Fendt

The asymptotic structure of outflows from rotating magnetized objects confined by a uniform external pressure is calculated. The flow is assumed to be perfect MHD, polytropic, axisymmetric and stationary. The well known associated first…

天体物理学 · 物理学 2007-05-23 Thibaut Lery , J. Heyvaerts , S. Appl , C. A. Norman

A new class of analytical 2-D solutions of the full set of the steady magnetohydrodynamic (MHD) equations, describing an axisymmetric helicoidal magnetized outflow originating from a rotating central object, is presented. The solutions are…

天体物理学 · 物理学 2009-11-06 J. J. G. Lima , E. R. Priest , K. Tsinganos

This paper concerns the viscous and non-resistive MHD systems which govern the motion of electrically conducting fluids interacting with magnetic fields. We consider an initial-boundary value problem for both compressible and…

偏微分方程分析 · 数学 2017-11-17 Zhong Tan , Yanjin Wang

An initial boundary value problem for compressible Magnetohydrodynamics (MHD) is considered on an exterior domain (with the first Betti number vanishes) in $R^3$ in this paper. The global existence of smooth solutions near a given constant…

偏微分方程分析 · 数学 2022-11-23 Hairong Liu , Tao Luo , Hua Zhong

We present an analytical model for describing highly relativistic acceleration of magnetically driven jets, within the framework of ideal MHD for cold, stationary and axisymmetric outflows. Our novel procedure is to treat the wind equation…

天体物理学 · 物理学 2016-08-30 Akira Tomimatsu , Masaaki Takahashi

We analyse the asymptotic symmetries of Maxwell theory at spatial infinity through the Hamiltonian formalism. Precise, consistent boundary conditions are explicitly given and shown to be invariant under asymptotic angle-dependent…

高能物理 - 理论 · 物理学 2018-05-30 Marc Henneaux , Cédric Troessaert

We investigate the internal structure of the current sheet in the pulsar wind within force-free and two-fluid MHD approximations. Within the force-free approximation we obtain general asymptotic solution of the Grad-Shafranov equation for…

高能天体物理现象 · 物理学 2018-01-24 V. V. Prokofev , L. I. Arzamasskiy , V. S. Beskin

This is the full and extended version of the brief note arXiv:1908.00938. A nontrivially solvable 4-dimensional Hamiltonian system is applied to the problem of wave fronts and to the asymptotic theory of partial differential equations. The…

可精确求解与可积系统 · 物理学 2021-07-15 Yu. Brezhnev , A. Tsvetkova

In one-dimensional unbounded domains, we consider the equations of a planar compressible magnetohydrodynamic (MHD) flow with constant viscosity and heat conductivity. More precisely, we prove the global existence of strong solutions to the…

偏微分方程分析 · 数学 2020-09-22 Boqiang Lü , Xiaoding Shi , Chengfeng Xiong

The magnetic field outside the earth is in good approximation a harmonic vector field determined by its values at the earth's surface. The direction problem seeks to determine harmonic vector fields vanishing at infinity and with prescribed…

偏微分方程分析 · 数学 2019-09-26 Ralf Kaiser , Tobias Ramming

Motivated by the stellar wind ejected from the upper atmosphere (Corona) of a star, we explore a boundary problem of the two-species nonlinear relativistic Vlasov-Poisson systems in the 3D half space in the presence of a constant vertical…

偏微分方程分析 · 数学 2024-09-04 Jiaxin Jin , Chanwoo Kim

Due to the absence of dissipation mechanism to the inviscid compressible systems, it is a challenging problem to prove their global solvability. In this paper, we are concerned with the initial-boundary value problem to the inviscid and…

偏微分方程分析 · 数学 2025-08-20 Jinkai Li , Liening Qiao
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