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arXiv 1502.00722gr-qchep-th
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带电粒子围绕磁化/带电黑洞的运动

Motion of charged particles around a magnetized/electrified black hole

Yen-Kheng Lim

摘要:

研究了恩斯特度规中类时和零荷电粒子的测地方程。我们考虑两种不同形式的恩斯特解决方案,麦克斯韦势表示一个均匀的电场或磁场。在各种配置的圆形轨道被认为是,以及他们的扰动和稳定性。我们发现,电场强度必须低于一定的电荷依赖的临界值,这些轨道是稳定的。磁性恩斯特度规的情况包含一个极限,它可以简化为梅尔文磁性宇宙。在这种情况下,运动方程的求解揭示了摆线或余摆线运动,类似于Frolov和Shoom发现的黑洞周围沉浸在测试磁场。

英文摘要:

Geodesic equations of timelike and null charged particles in the Ernst metric are studied. We consider two distinct forms of the Ernst solution where the Maxwell potential represents either a uniform electric or magnetic field. Circular orbits in various configurations are considered, as well as their perturbations and stability. We find that the electric field strength must be below a certain charge-dependent critical value for these orbits to be stable. The case of the magnetic Ernst metric contains a limit which reduces to the Melvin magnetic universe. In this case the equations of motion are solved to reveal cycloidlike or trochoidlike motion, similar to those found by Frolov and Shoom around black holes immersed in test magnetic fields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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