Large Scale Density Inhomogeneities in the Universe
Large Scale Density Inhomogeneities in the Universe
复制标题
宇宙中的大尺度密度不均匀性
DOI：
10.1038/215719a0
复制
发表时间：
1967
期刊：
影响因子：
64.8
通讯作者：
R. B. Partridge
中科院分区：
文献类型：
--
作者：
David T. Wilkinson;R. B. Partridge
萨克斯和沃尔夫最近考虑了宇宙中特征维数为109秒差数量级的大尺度密度不均匀性的可能性。具有高红移光谱的准恒星源不是各向同性分布的说法引起了人们对大不均匀性的兴趣。Rees和sciam3提出，具有大z的准恒星源的星团倾向意味着宇宙的质量可能不是均匀分布在z ~ 1的尺度上。尽管对这些源分布的各向异性的观测状况仍有一些疑问，但我们最近获得的结果似乎对宇宙中可能的密度不均匀性的大小设定了相当严格的限制。
Sachs and Wolfe have recently considered the possibility of large scale density inhomogeneities in the universe with characteristic dimensions of the order of 109 parsecs.1. The suggestion2 that quasi-stellar sources with highly red-shifted spectra are not isotropically distributed has aroused interest in large inhomogeneities. Rees and Sciama3 have suggested that the tendency to cluster of quasi-stellar sources with large z implies that the mass of the universe may not be homogeneously distributed on a scale of z ∼ 1. Although the observational status of the anisotropy of the distribution of these sources is in some doubt4, we have recently obtained results which appear to set rather stringent limits on the magnitude of possible density inhomogeneities in the universe.