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arXiv 0906.0978gr-qc
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共形时空中的有限轴对称带电尘埃粒子源

Finite Axisymmetric Charged Dust Disks Sources for Conformastatic Spacetimes

Guillermo A. González, Antonio C. Gutiérrez-Piñeres, Paolo A. Ospina

摘要:

提出了一个无限族的有限轴对称带电尘埃盘。圆盘是通过求解共形时空的爱因斯坦-麦克斯韦方程组得到的,假设电磁势的类时分量和度规势之间的函数依赖关系是拉普拉斯方程的解。本文给出了电荷密度与能量面密度成正比的有限扩展圆盘源的Einstein-麦克斯韦方程组的解。我们采用众所周知的“逆”的方法来表示有限薄盘冈萨雷斯和雷纳产生构象静电荷尘埃薄盘的引力势。与磁盘源的一致性度量的确切例子制定了完整的。

英文摘要:

An infinite family of finite axisymmetric charged dust disks is presented. The disks are obtained by solving the Einstein-Maxwell equations for conformastatic spacetimes by assuming a functional dependency between the time-like component of the electromagnetic potential and the metric potential in terms of a solution of the Laplace equation. We give solutions to the Einstein-Maxwell equations with disk sources of finite extension in which the charge density is proportional to the energy surface density. We apply the well-know "inverse" approach to the gravitational potential representing finite thin disks given by Gonzalez and Reina to generate conformastatic charged dust thin discs. Exact examples of conformastatic metrics with disk sources are worked out in full.

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