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arXiv 1408.6316gr-qchep-th
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Kerr时空中的刚性旋转ZAMO曲面

Rigidly rotating ZAMO surfaces in the Kerr spacetime

Andrei V. Frolov, Valeri P. Frolov

摘要:

如果克尔时空中的一个静止观察者的角速度$ω$有一个特定的值,那么他/她的角动量为零,这个值取决于观察者的位置。具有相同角速度$ω$的零角动量观测者的世界线构成一个三维曲面,该曲面具有产生时间平移和旋转的Killing矢量与之相切的性质,我们称这样的曲面为刚性旋转ZAMO曲面.这个定义可以自然地推广到黑洞内部的表面,在那里ZAMO的轨迹正式成为类空的。这样的表面的一般性质是存在的线性组合的Killing向量与常系数,使他们正交在it. In本文中,我们讨论的性质的刚性旋转ZAMO表面内外的黑洞和这些对象的相关性的一些有趣的物理问题。

英文摘要:

A stationary observer in the Kerr spacetime has zero angular momentum if his/her angular velocity $ω$ has a particular value, which depends on the position of the observer. Worldlines of such zero angular momentum observers (ZAMOs) with the same value of the angular velocity $ω$ form a three dimensional surface, which has the property that the Killing vectors generating time translation and rotation are tangent to it. We call such a surface a rigidly rotating ZAMO surface. This definition allows a natural generalization to the surfaces inside the black hole, where ZAMO's trajectories formally become spacelike. A general property of such a surface is that there exist linear combinations of the Killing vectors with constant coefficients which make them orthogonal on it. In this paper we discuss properties of the rigidly rotating ZAMO surfaces both outside and inside the black hole and relevance of these objects to a couple of interesting physical problems.

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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