论文标题
潮汐电荷对旋转黑洞的超沉淀的影响
Tidal-charge effects on the superradiance of rotating black holes
论文作者
论文摘要
在旋转黑洞周围发生的超高现象时，变化A（负）潮汐电荷会导致。这是通过计算黑洞散布的无质量标量波的放大因子来制作的。结果表明，潮汐电荷强度的增加会导致从近超级黑孔中大量提取能量。这种改进是由于以下事实，即具有更多负潮汐电荷的极端黑色孔更快地旋转。如果固定每单位质量的黑洞角动量，则最大扩增会随潮气强度的增加而降低。潮汐电荷还可能改变了无质量标量波的超级后期现象，导致最大扩增的发生$ m> 1 $与Kerr黑洞的情况不同。
The changes a (negative) tidal charge causes at the phenomenon of superradiance which occurs around rotating black holes are investigated. This is made by computing the amplification factors of massless scalar waves being scattered by the black hole. It is shown that the increase of the tidal charge intensity leads to a considerable enhancement of energy extraction from near-extreme black holes. Such improvement results from the fact that extreme black holes with more negative tidal charges spin faster. Maximum amplification decreases with the increase of the tidal charge intensity if the angular momentum of the black hole per unit mass is fixed. The tidal charge may also change crucially the superradiance phenomenon of massless scalar waves causing maximum amplification to occur for $m > 1$ differently from the case of Kerr black holes.
