Cosmic Voids and Biased Galaxy Formation
Cosmic Voids and Biased Galaxy Formation
复制标题
宇宙空洞和有偏差的星系形成
DOI:
10.1093/mnras/267.3.605
复制
发表时间:
1993
影响因子:
4.8
通讯作者:
D. Weinberg
中科院分区:
文献类型:
--
作者:
Blane Little;D. Weinberg
Using cosmological N-body simulations and the void probability function (VPF), we investigate the statistical properties of voids within a wide range of initially Gaussian models for the origin of large-scale structure. We study the dependence of the VPF on cosmological parameters, on the power spectrum of primordial fluctuations, and on assumptions about galaxy formation. We pay particular attention to the ability of the VPF to diagnose biased galaxy formation − the preferential formation of galaxies in regions of high background density and corresponding suppression of galaxy formation in regions of low background density. We find that the VPF is insensitive to the cosmic density parameter Ω 0 and the cosmological constant λ 0 , provided that fluctuations are normalized to a fixed rms amplitude on scales ∼8 h −1 Mpc