黑洞

But, unlike the black hole at the centre of our Milky Way, the million-solar-mass black hole inside NGC 4945 is an Active Galactic Nucleus that is frantically consuming any surrounding matter, and so releasing tremendous amounts of energy.

但与银河系核心的黑洞不同，NGC 4945中数百万太阳质量的超级黑洞正在疯狂地吞噬周围的物质、并释放极为巨大的能量——是个活跃星系核。

However, there are many differences between the static and the dynamical spcetimes. Using the the general analysis, from the unified first law of thermodynamics dE_H = TdS+WdVwhere W =(ρ- P/2 on the apparent horizon, we study the effect of Hawking radiation of the apparent horizon of the FRW universe.

其次，基于静态黑洞时空隧穿方法的一般性研究，那里黑洞的辐射率Γ-exp，是视界上热力学第一定律dE_H=TdS+PdV的必然结果，我们在动力学时空FRW宇宙背景下，发展了这种分析。

This dissertation is mainly about the scalar field in curved black hole spacetime backgrounds assumed to be asymptotic de Sitter space at infinity.

本文的主要内容是关于黑洞视界外部时空中的标量场，我们选择的黑洞时空在无穷远处是渐近de Sitter时空。

You've heard the controversy. Particle physicists predict the world's new highest-energy atom smasher, the Large Hadron Collider near Geneva, Switzerland, might create tiny black holes, which they say would be a fantastic discovery. Some doomsayers fear those black holes might gobble up Earth--physicist say that's impossible--and have petitioned the United Nations to stop the $5.5 billion LHC .

你可能听说过这场争论：粒子物理学家们预测，世界上最高能量的新型核粒子加速器——位于瑞士日内瓦附近的大型强子对撞机，可能会创造出微型黑洞，他们称这将是一个奇妙的发现；一些灾难预言者担心，这些黑洞可能会吞没地球，尽管物理学家们说这是不可能的，但他们还是请求联合国停止这个55亿美元的LHC项目。

You've heard the controversy. Particle physicists predict the world's new highest-energy atom smasher the Large Hadron Collider near Geneva Switzerland might create tiny black holes which they say would be a fantastic discovery. Some doomsayers fear those black holes might gobble up Earth--physicist say that's impossible--and have petitioned the United Nations to stop the $5.5 billion LHC .

你可能听说过这场争论：粒子物理学家们预测，世界上最高能量地新型核粒子加速器——位于瑞士日内瓦附近地大型强子对撞机，可能会创造出微型黑洞，他们称这将是一个奇妙地发现；一些灾难预言者担心，这些黑洞可能会吞没地球，尽管物理学家们说这是不可能地，但他们还是哀求联合国进行这个55亿美元地 LHC 项目。

But there are images of binary star systems consisting of one normal star and one black hole, and of the central regions of Galaxies that are believed to contain black holes.

但是有由一个黑洞和一个正常恒星组成的双子星系统的图像，和被认为包含有黑洞的星系中心区域的图像。

In this thesis,we explore in detail the gas of 2D dilaton black holes and of the 2+1 black holes,and find that both the microcanonical ensemble and the canonical ensemble can beused to describe the two systems.

他们研究了四维黑洞的统计力学，认为只有用微正则系综才可能讨论这一黑洞气体的热力学。

In this paper, starting from Chandrasekhar's results, we find the solution of the Dirac equation with non-zero rest mass just out side the event horizon of a nearly extreme Kerr black hole and suce...

本文在此基础上，在近似极端Kerr 黑洞的事件视界附近找到了静止质量不为零的Dirac方程的解，并成功地导出了Hawking热谱公式，从而解决了Dirac粒子在Kerr 黑洞的Hawking蒸发问题。

These results have profoundly changed astronomers' views of BHs: More than just exotica needed to explain rare AGNs, BHs are becoming an integral part of our understanding of galaxy formation.

这些结果深深地改变了天文学家对黑洞的认识：比解释活动星系核更吸引人的是，黑洞正成为解释星系形成必需的一部分。

In order to study some problems relative to extremal black hole and entropy, a falling-in physical particle in metric and electromagnetic tensor field of a black hole is also studied.

在第二章中，我们首先考虑Reissner-Nordstrom黑洞的度规场和电磁场张量，研究了落入黑洞的带电物理粒子。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

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镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。