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arXiv 1104.2218gr-qcastro-ph.HE
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具有自旋参数$a_* > 1$的紧致对象

Compact objects with spin parameter $a_* > 1$

Cosimo Bambi

摘要:

在四维广义相对论中,黑洞由克尔解描述,并完全由它们的质量$M$和自旋角动量$J$指定。广义相对论中黑洞的基本极限是克尔束缚$|a_*| \le 1$,其中$a_* = J/M^2$是自旋参数。未来的实验将能够探测这些物体周围的几何形状,并测试克尔黑洞假设。有趣的是,如果这些物体不是黑洞,吸积过程可能会使它们旋转到$a_* > 1$。

英文摘要:

In 4-dimensional General Relativity, black holes are described by the Kerr solution and are completely specified by their mass $M$ and by their spin angular momentum $J$. A fundamental limit for a black hole in General Relativity is the Kerr bound $|a_*| \le 1$, where $a_* = J/M^2$ is the spin parameter. Future experiments will be able to probe the geometry around these objects and test the Kerr black hole hypothesis. Interestingly, if these objects are not black holes, the accretion process may spin them up to $a_* > 1$.

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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