克尔时空中扩展体运动的四极效应
广义相对论与量子宇宙学
2009-11-05 v1
摘要
根据迪克森模型,在克尔背景下研究了具有偶极和四极结构的物体的运动,扩展了之前在施瓦西背景下进行的分析。在自旋和四极张量的恒定框架分量以及质心沿赤道圆轨道运动(物体的总四动量与其对齐)的简化假设下,求解了完整的演化方程组。我们发现,由于物体的内部结构,运动偏离了测地线,从而产生了可测量的效应。讨论了在假设银心是一个克尔超大质量黑洞的情况下,对绕银心运行的密近双星系统轨道周期的测地线值的修正。
引用
@article{arxiv.0910.2842,
title = {Quadrupole effects on the motion of extended bodies in Kerr spacetime},
author = {Donato Bini and Pierluigi Fortini and Andrea Geralico and Antonello Ortolan},
journal= {arXiv preprint arXiv:0910.2842},
year = {2009}
}
备注
9 pages, latex iopart class document, no figures. Note that the second term in the rhs of Eq. (1.2) was misprinted in the published version of the paper [Classical and Quantum Gravity, Vol. 25, 125007 (2008)]. The results are but correct