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arXiv 1706.08009gr-qcastro-ph.COhep-th
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黑洞脉动

Pulsation of black holes

Changjun Gao, Youjun Lu, You-Gen Shen, Valerio Faraoni

摘要:

霍金-彭罗斯奇点定理指出,在广义相对论中,奇点在黑洞内部形成。为了消除这种奇异性,人们必须求助于一种更基本的理论。利用圈量子宇宙学和膜世界模型中修正的动力学方程,我们研究了具有相当一般状态方程的完美流体球的引力坍缩。在观察者与这种流体共同运动的框架中,球体在最大和最小尺寸之间脉动,避免了奇点。外部几何体也被构造。通常有一个外视视界和一个内视视界,类似于Reissner-Nordström情形。对于一个遥远的观察者来说,{视界}穿越发生在无限长的时间内,黑洞量子“跳动的心脏”的脉动是完全不可观察的。然而,如果黑洞不是球对称的,并且由于四极矩而辐射引力波(如果有的话),则可以观察到。

英文摘要:

The Hawking-Penrose singularity theorem states that a singularity forms inside a black hole in general relativity. To remove this singularity one must resort to a more fundamental theory. Using a corrected dynamical equation arising in loop quantum cosmology and braneworld models, we study the gravitational collapse of a perfect fluid sphere with a rather general equation of state. In the frame of an observer comoving with this fluid, the sphere pulsates between a maximum and a minimum size, avoiding the singularity. The exterior geometry is also constructed. There are usually an outer and an inner apparent horizon, resembling the Reissner-Nordström situation. For a distant observer the {horizon} crossing occurs in an infinite time and the pulsations of the black hole quantum "beating heart" are completely unobservable. However, it may be observable if the black hole is not spherical symmetric and radiates gravitational wave due to the quadrupole moment, if any.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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