期刊
EUROPEAN PHYSICAL JOURNAL C
卷 78, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-018-5569-7
关键词
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资金
- Czech Science Foundation [16-03564Y]
- UNAM-DGAPA-PAPIIT [111617]
- Czech Science Foundation [16-03564Y]
- UNAM-DGAPA-PAPIIT [111617]
We perform a detailed analysis of the properties of stationary observers located on the equatorial plane of the ergosphere in aKerr spacetime, including light-surfaces. This study highlights crucial differences between black hole and the super-spinner sources. In the case of Kerr naked singularities, the results allow us to distinguish between weak and strong singularities, corresponding to spin values close to or distant from the limiting case of extreme black holes, respectively. We derive important limiting angular frequencies for naked singularities. We especially study very weak singularities as resulting from the spin variation of black holes. We also explore the main properties of zero angular momentum observers for different classes of black hole and naked singularity spacetimes.
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