Cosmic Explosions
Cosmic Explosions
复制标题
宇宙爆炸
作者：
R. Stothers
近年来，对射电星系和“星星”星系性质的认识促使了许多理论解释。发射出的大量能量很难用目前的天体物理学理论来解释，并导致了几种宇宙学解释。特别是，McCrea 1设想了一种稳态宇宙的形式，在这种宇宙中，物质在星系核中被创造出来，那里的物质密度已经很高，作为现有物质的一种属性。Mr.P. 2认为，剧烈的度规调整（爆炸）必须发生，以防止在坍缩球的史瓦西半径处的无限度规不连续性。从这些“表面爆炸”中产生了物质。球体如何在有限的时间内坍缩到这种状态（对于外部观察者来说）是不确定的，这种可能性受到了严重的质疑。
RECOGNITION of the nature of radio and ‘star’ galaxies has prompted many theoretical interpretations during recent years. The vast amount of energy emitted is difficult to account for on present astrophysical theory, and has led to several cosmological explanations. In particular, McCrea1 envisages a form of the steady-state universe in which matter is created in the nuclei of galaxies, where the density of matter is already high, as a property of existing matter. Thomas2 suggests that violent metric adjustments (explosions) must occur to prevent the infinite metric discontinuity at the Schwarzschild radius of a collapsing sphere. Out of these ‘surface explosions’ matter is created. How the sphere collapses to this state in a finite time (to an external observer) is unspecified, and the possibility has been seriously questioned3.