摘要
标准宇宙模型是指宇宙始于极端温高密状态的热大爆炸理论。80年代后期以来,面对观测宇宙学记面一系列始料未及而一时难以解释的新发现,有人认为标准模型业已死亡,有人则认为作出这种论断为时尚早,该模型的坚定拥护者则认为已有足够的观测和实验证据以支持这一理论,而无过硬的证据可驳倒它。 本文旨在简介标准宇宙模型的观测证据,主要涉及字宙背景辐射、轻元素丰度和中微子的代数、河外天体红移的本析、星系和类星体的演化、星系起源和时标问题等等。
The so called 'Standard Cosmological Model' means the relativistic Hot Big, Bang theory, in which our expanding universe has been evolving from an extremely hot and dense state. Since late 1980s, on the one hand, as having some unexpected facts found in the field of observational cosmology, some authors claime that this model must have died already. On the other hand, among those who disagree with the above statement, some scientists definitely state that advances in observations and experiments have yielded a variety of evidence in support of this model and none convincingly contradict it.A brief review on observational evidences for the standard Cosmological model is presented in this article, in which among the issues discussed are those concerning;the cosmic background radiation, light element abunderfces and neutrino counting, the origin of redshifts of extragalactic objects, the evolution of galaxies and quasars, the origin of galaxies and the timescale problem, etc.
出处
《天文学进展》
CSCD
北大核心
1992年第3期172-181,共10页
Progress In Astronomy
基金
国家自然科学基金
