【摘要】 应用解析和数值相结合的方法,本文处理了球对称太阳引力场中具有磁场的非粘、可压缩、完全导电等离子体的二维磁流体动力学平衡问题.得到了两种不同的解:(1)一种相应于磁场具有闭合区和开场区的稳定、自洽的等离子体流动,开场区几个太阳半径之外等离子体径向速度达到大值,超过了局地声速和局地Alfén速度;(2)等离子体速度总是小于局地声速和局地Alfvén速度,并当径向距离很大时速度趋于零.更多还原

【Abstract】 By using a method in combination with analytical and numerical methods, the paper treats the two-dimensional magnetohydrodynamic equilibria of an inviscid compressible, perfectly conducting plasma with an embedded magnetic field in the spherically symmetric gravitational field of the sun. Two different solutions are obtained. (1) A class of steady, self-consistent plasma flows corresponding to the structure of magnetic field consisted of the closed and open regions is given. In the open region, the radial velocity of plasma can be reached the large values exceeded the local sound speed and Alfven speed beyond the several radius of the sun. (2) The plasma velocity is always smaller than the local sound and Alfven speeds. When the radial distance is large, it tend to zero.更多还原