科尔黑洞中心是不是奇点而是奇环-由自身动量维持的一维环形。它有两个视界(外部视界和内部视界)以及一个椭圆形的能层(ergosphere)。

At the centre of a Kerr black hole, there is no point singularity, but rather a ring singularity-a spinning one-dimensional ring held open by its own momentum.

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第三章研究了复杂像散椭圆光束的轨道角动量。

In chapter 3, the orbital angular momentum of complex astigmatic elliptical beams is investigated.

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