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首页> 外文期刊>Physical review, D >Efficiency of the Keplerian accretion in braneworld Kerr-Newman spacetimes and mining instability of some naked singularity spacetimes
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Efficiency of the Keplerian accretion in braneworld Kerr-Newman spacetimes and mining instability of some naked singularity spacetimes

机译:在Braneworld Kerr-Newman Spacetims中的Keplerian吸收的效率和一些裸体奇点的挖掘不稳定性

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摘要

We show that the braneworld rotating Kerr-Newman black hole and naked singularity spacetimes with both positive and negative braneworld tidal charge parameters can be separated into 14 classes according to the properties of circular geodesics governing the Keplerian accretion. We determine the efficiency of the Keplerian accretion disks for all braneworld Kerr-Newman spacetimes. We demonstrate the occurrence of an infinitely deep gravitational potential in Kerr-Newman naked singularity spacetimes having the braneworld dimensionless tidal charge b is an element of (1/4, 1) and the dimensionless spin a is an element of (2 root b - root b(4b - 1), 2 root b + root b(4b - 1), implying unbound efficiency of the Keplerian accretion and the possibility of extracting the whole naked singularity mass. Therefore, we call them braneworld "mining-unstable" Kerr-Newman naked singularity spacetimes. Fundamental restriction on the relevance of the extraordinary-but fully classical-phenomenon of the mining instability is given by validity of the assumption of geodesic motion of the accreting matter.
机译:我们展示了Braneworld旋转Kerr-Newman黑洞和裸体奇点换乘时间与积极和负面的Braneworld潮汐电荷参数可以根据控制Keplerian Accretion的圆形测距仪的性质分离成14个课程。我们确定所有Braneworld Kerr-Newman Spacetimes的Keplerian吸收磁盘的效率。我们证明了在具有Braneworld无量纲潮汐电荷B的Kerr-Newman裸露奇点偶像时段的无限深深的引力潜力的发生是(1/4,1)的元素,无量纲旋转A是(2根B - 根B(4b-1),2根根B +根B(4b - 1),暗示了开普勒accetion的未结合效率和提取整个赤身奇点质量的可能性。因此,我们称他们为Braneworld“挖掘不稳定”克尔 - 纽曼赤裸的奇点空间。基本限制关于采矿不稳定性的非凡而完全现象的相关性的基本限制是通过对凸化物质的测量运动的假设的有效性给出的。

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  • 来源
    《Physical review, D》 |2016年第1期|共28页
  • 作者单位

    Silesian Univ Fac Philosophy &

    Sci Inst Phys Bezrucovo Namesti 13 CZ-74601 Opava Czech Republic;

    Silesian Univ Fac Philosophy &

    Sci Inst Phys Bezrucovo Namesti 13 CZ-74601 Opava Czech Republic;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 粒子物理学;场论;
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