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arXiv 1408.4945gr-qc
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广义相对论坡印廷-罗伯逊效应。II:具有非零angular momentum的光子通量

The general relativistic Poynting-Robertson effect. II: A photon flux with nonzero angular momentum

Donato Bini, Andrea Geralico, Robert T. Jantzen, Oldrich Semerák, Luigi Stella

摘要:

我们研究了一个测试粒子在一个静止的,轴向和反射对称的时空中的一个中心紧凑的对象,作为与测试辐射场的相互作用的影响相同的对称性。考虑辐射通量固定,但任意(非零)角动量,我们扩展了以前的结果限于赤道运动内的零角动量光子通量的克尔和史瓦西背景。当光子通量的角动量为零时,存在唯一的平衡圆轨道,而当光子的角动量足够大时,会出现多个这样的轨道。

英文摘要:

We study the motion of a test particle in a stationary, axially and reflection symmetric spacetime of a central compact object, as affected by interaction with a test radiation field of the same symmetries. Considering the radiation flux with fixed but arbitrary (non-zero) angular momentum, we extend previous results limited to an equatorial motion within a zero-angular-momentum photon flux in the Kerr and Schwarzschild backgrounds. While a unique equilibrium circular orbit exists if the photon flux has zero angular momentum, multiple such orbits appear if the photon angular momentum is sufficiently high.

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