论文标题
通过磁重新连接从Kerr-DE保姆黑洞提取能量
Extracting energy via magnetic reconnection from Kerr-de Sitter black holes
论文作者
论文摘要
最近已经显示，磁重新连接可以为我们提供一种新的机制，可以从Kerr黑洞中提取黑洞旋转能量。在本文中，我们通过此磁重新连接过程研究了Kerr-De Sitter Black Black Hole的能量提取。结果表明，随着宇宙常数的增加，缓慢旋转的Kerr-De Sitter黑洞可以比其Kerr对应物更好地实现能量提取。有趣的是，尽管数值结果表明，功率和效率的最大值随着宇宙常数而略有降低，但当黑洞旋转大于1并且主导重新连接$ x $点时，Kerr-DE Sitter Black Black Hole仍然具有显着的优势 - 远离事件视野。这主要归因于宇宙常数存在的上旋转和较宽的骨圈。这些结果通过磁重新连接过程发现了宇宙常数对能量提取的显着影响。
It has been recently shown that magnetic reconnection can provide us a novel mechanism to extract black hole rotational energy from a Kerr black holes. In this paper, we study the energy extraction from the Kerr-de Sitter black hole via this magnetic reconnection process. The result shows that, with the increase of the cosmological constant, a slowly spinning Kerr-de Sitter black hole can implement the energy extraction better than its Kerr counterpart. Interestingly, although the numerical results show that the maximum values of the power and efficiency slightly decrease with the cosmological constant, Kerr-de Sitter black hole still has significant advantages when the black hole spin is larger than 1 and the dominant reconnection $X$-point is far away from the event horizon. This is mainly attributed to the higher upper spin bound and wider ergosphere in the presence of the cosmological constant. These results uncover the significant effects of the cosmological constant on the energy extraction via the magnetic reconnection process.
