球形引力场和偶极磁场中的荷电环面
Charged tori in spherical gravitational and dipolar magnetic fields
摘要：
本文提出了一种在球形重力场和偶极磁场联合作用下的非导电、带电、理想流体环的牛顿模型，并分析了静止、轴对称的环结构。在这样的环面中，物质呈现出纯粹的循环运动，由此产生的对流携带电荷绕对称轴永久旋转。作为一个主要的结果，我们证明了可能存在的离赤道带电环面和赤道环面的尖点，使流出的物质从环面也在牛顿政权。这些现象在性质上代表了引力和电磁力相互作用的新结果。从天体物理学的角度来看，我们的调查可以提供深入了解的过程，确定周围的吸积盘尘埃环的垂直结构。
英文摘要：
A Newtonian model of non-conductive, charged, perfect fluid tori orbiting in combined spherical gravitational and dipolar magnetic fields is presented and stationary, axisymmetric toroidal structures are analyzed. Matter in such tori exhibits a purely circulatory motion and the resulting convection carries charges into permanent rotation around the symmetry axis. As a main result, we demonstrate the possible existence of off-equatorial charged tori and equatorial tori with cusps enabling outflows of matter from the torus also in the Newtonian regime. These phenomena represent qualitatively a new consequence of the interplay between gravity and electromagnetism. From an astrophysical point of view, our investigation can provide insight into processes that determine the vertical structure of dusty tori surrounding accretion disks.
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