Precessing and periodic motions around a black-bounce/traversable wormhole
Precessing and periodic motions around a black-bounce/traversable wormhole
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DOI：
10.1140/epjc/s10052-020-08661-w
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
Tianchun Zhou;Yi Xie
中科院分区：
文献类型：
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作者：
Tianchun Zhou;Yi Xie
我们研究了类时粒子围绕黑色弹跳/可穿越虫洞的进动和周期测地线运动。在得到它的半经典近星进动和相对论近星进动后，我们根据探测到的恒星S2绕银河系中心的进动，找到了这种时空尺度长度的一个初步界限。我们还研究了它周围的周期轨道，发现尺度长度的变化会改变周期轨道的分类，导致从周期轨道到准周期轨道的转变，反之亦然。
We investigate precessing and periodic geodesic motions of timelike particles around a black-bounce/traversable wormhole. After obtaining its semi-classic and relativistic periastron advance, we find a preliminary bound on the scale length of such a spactime based on the detected precession of the star S2 around the Galactic Center. We also study periodic orbits around it and find that the variation of the scale length can change the taxonomy of the periodic orbits and cause the transition from a periodic orbit to a quasi-periodic one and vice versa.