期刊
GENERAL RELATIVITY AND GRAVITATION
卷 51, 期 5, 页码 -出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10714-019-2544-z
关键词
Black holes; Rotating frames; Nonextremal and extremal horizons; Critical particles; Rotational analogue of Eddington-Finkelstein frames
资金
- Russian Government Program of Competitive Growth of Kazan Federal University
- Russian Foundation for Basic Research [18-02-00461-a]
- SFFR, Ukraine [32367]
We consider a particle moving towards a rotating black hole. We are interested in the number of its revolution n around a black hole. In our previous work (Pavlov and Zaslavskii in Gen Relativ Gravit 50:14, 2018. arXiv:1707.02860) we considered this issue in the Boyer-Lindquist type of coordinates with a subsequent procedure of subtraction. Now, we reconsider this issue using from the very beginning the frames regular on the horizon. For a nonextremal black hole, regularity of a coordinate frame leads to the finiteness of a number of revolutions around a black hole without a subtraction procedure. Meanwhile, for extremal black holes comparison of n calculated in the regular frame with some subtraction procedures used by us earlier shows that the results can be different.
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