Tidal dynamics in Kerr spacetime

Tidal dynamics in Kerr spacetime
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克尔时空中的潮汐动力学

DOI:
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
B. Mashhoon
B. Mashhoon
中科院分区:
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文献类型:
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作者:
C. Chicone;B. Mashhoon

文献摘要

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研究了克尔源附近自由测试粒子相对于稳定赤道圆测地线轨道的运动。证明了非线性广义雅可比方程在这种情况下可以转化为自治形式。研究了临界速度以外的潮汐动力学。我们特别指出,从平行或反平行于克尔旋转轴的圆形轨道垂直发射的自由测试粒子,如果其初始相对速度超过潮汐加速度。简要地提到了我们的结果在高能天体物理学中的可能应用。
The motion of free nearby test particles relative to a stable equatorial circular geodesic orbit about a Kerr source is investigated. It is shown that the nonlinear generalized Jacobi equation can be transformed in this case to an autonomous form. Tidal dynamics beyond the critical speed is studied. We show, in particular, that a free test particle vertically launched from the circular orbit parallel or antiparallel to the Kerr rotation axis is tidally accelerated if its initial relative speed exceeds . Possible applications of our results to high-energy astrophysics are briefly mentioned.