论文标题
关于螺母时空的变形延伸的性能
On the properties of a deformed extension of the NUT space-time
论文作者
论文摘要
我们考虑了Halilsoy发现的Zipoy-Voorhees度量标准的固定延伸的一类空间时间。我们表明，解决方案并不描述旋转源，而必须与螺母情况相似的解释，因为它具有重力电荷的变形来源。我们表明，Halilsoy家族与螺母时空直接相关，可以在消失的变形限制下获得。我们研究了这类空间时间中测试颗粒和光子的运动，尤其是最内向的稳定圆形轨道和光子捕获半径。最终，我们证明，这类解决方案具有一个子模型，其中允许封闭的时曲线曲线。
We consider a class of space-times given by a stationary extension of the Zipoy-Voorhees metric that was found by Halilsoy. We show that the solutions do not describe rotating sources but must be interpreted, similarly to the NUT case, as deformed sources endowed with a gravitomagnetic charge. We show that the Halilsoy family is directly linked to the NUT space-time, which can be obtained in the limit of vanishing deformations. We investigate the motion of test particles and photons in this class of space-times, in particular the innermost stable circular orbits and photon capture radius. Finally we show that this class of solutions possesses a sub-manifold where closed time-like curves are allowed.
