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We investigate spherically symmetric equilibrium states of the Vlasov-Poisson system, relevant in galactic dynamics. We recast the equations into a regular three-dimensional system of autonomous first order ordinary differential equations…

数学物理 · 物理学 2007-10-31 J. Mark Heinzle , Alan D. Rendall , Claes Uggla

A global-in-time existence theorem for classical solutions of the Vlasow-Darwin system is given under the assumption of smallness of the initial data. Furthermore it is shown that in case of spherical symmetry the system degenerates to the…

数学物理 · 物理学 2009-01-26 M. Seehafer

The full compressible Navier-Stokes system describing the motion of a viscous, compressible, heat-conductive, and Newtonian polytropic fluid is studied in a three-dimensional simply connected bounded domain with smooth boundary having a…

偏微分方程分析 · 数学 2022-07-04 Jing Li , Boqiang Lü , Xue Wang

We study existence and uniqueness of the solution to the gravitational Vlasov-Poisson system evolving in $\mathbb{R}^3$. It is assumed that initially the particles are distributed according to a spatial density with a power-law decay in…

偏微分方程分析 · 数学 2024-07-16 Guido Cavallaro , Carlo Marchioro

We study equilibrium states in relativistic galactic dynamics which are described by solutions of the Einstein-Vlasov system for collisionless matter. We recast the equations into a regular three-dimensional system of autonomous first order…

广义相对论与量子宇宙学 · 物理学 2019-05-01 Mikael Fjällborg , J. Mark Heinzle , Claes Uggla

We consider the three dimensional gravitational Vlasov-Poisson (GVP) system in both classical and relativistic cases. The classical problem is subcritical in the natural energy space and the stability of a large class of ground states has…

偏微分方程分析 · 数学 2014-11-18 Mohammed Lemou , Florian Mehats , Pierre Raphael

As is well known from the work of R. Glassey} and J. Schaeffer, the main energy estimates which are used in global existence results for the gravitational Vlasov-Poisson system do not apply to the relativistic version of this system, and…

数学物理 · 物理学 2007-12-03 Mahir Hadzic , Gerhard Rein

We propose a new numerical technique for following the evolution of a self-gravitating collisionless system in general relativity. Matter is modeled as a scalar field obeying the coupled Klein-Gordon and Einstein equations. A phase space…

天体物理学 · 物理学 2009-10-28 Lawrence M. Widrow

The motion of a collisionless plasma - a high-temperature, low-density, ionized gas - is described by the Vlasov-Maxwell (VM) system. These equations are considered in one space dimension and two momentum dimensions without the assumption…

偏微分方程分析 · 数学 2016-04-18 Robert Glassey , Stephen Pankavich , Jack Schaeffer

This paper concerns the global existence for classical solutions problem to the 3D Density-Dependent Viscosity barotropic compressible Navier-Stokes in $\Omega$ with slip boundary condition, where $\Omega$ is a simply connected bounded…

偏微分方程分析 · 数学 2021-04-22 Yuebo Cao

A collisionless plasma is modeled by the Vlasov-Poisson system in one dimension. We consider the situation in which mobile negative ions balance a fixed background of positive charge, which is independent of space and time, as x tends to…

偏微分方程分析 · 数学 2010-03-01 Stephen Pankavich

A collisionless plasma is modeled by the Vlasov-Poisson system in three space dimensions. A fixed background of positive charge, which is independent of time and space, is assumed. The situation in which mobile negative ions balance the…

偏微分方程分析 · 数学 2015-05-14 Stephen Pankavich

We establish the global existence and uniqueness of classical solutions to the three-dimensional full compressible Navier-Stokes system with smooth initial data which are of small energy but possibly large oscillations where the initial…

数学物理 · 物理学 2011-08-08 Xiangdi Huang , Jing Li

The motion of a collisionless plasma - a high-temperature, low-density, ionized gas - is described by the Vlasov-Maxwell system. In the presence of large velocities, relativistic corrections are meaningful, and when symmetry of the particle…

偏微分方程分析 · 数学 2009-12-31 Robert Glassey , Stephen Pankavich , Jack Schaeffer

We establish the global existence and uniqueness of classical solutions to the Cauchy problem for the isentropic compressible Navier-Stokes equations in three spatial dimensions with smooth initial data which are of small energy but…

数学物理 · 物理学 2015-03-17 Xiangdi Huang , Jing Li , Zhouping Xin

The Vlasov-Einstein system describes the evolution of an ensemble of particles (such as stars in a galaxy, galaxies in a galaxy cluster etc.) interacting only by the gravitational field which they create collectively and which obeys…

广义相对论与量子宇宙学 · 物理学 2015-06-25 Gerhard Rein

A self-gravitating homogeneous ball of a fluid with pressure zero where the fluid particles are initially at rest collapses to a point in finite time. We prove that this gravitational collapse can be approximated arbitrarily closely by…

数学物理 · 物理学 2015-10-01 Gerhard Rein , Lukas Taegert

The full compressible Navier-Stokes system (FNS) describing the motion of a viscous, compressible, heat-conductive, and Newtonian polytropic fluid in a three-dimensional (3D) exterior domain is studied. For the initial-boundary-value…

偏微分方程分析 · 数学 2022-08-26 Jiaxu Li , Jing Li , Boqiang Lü

We show that a smooth, small enough Cauchy datum launches a unique classical solution of the relativistic Vlasov-Darwin (RVD) system globally in time. A similar result is claimed in Comm. Math. Sci. 6, 749-764 (2008) following the work in…

数学物理 · 物理学 2012-09-04 Reinel Sospedra-Alfonso , Martial Agueh , Reinhard Illner

We prove global existence of the $3D$ relativistic Vlasov-Maxwell system for a class of arbitrary large regular initial data with spherical symmetry, in which the initial distribution function of particles is assumed to decay fast but…

偏微分方程分析 · 数学 2022-03-04 Xuecheng Wang