Observational Evidence for Stochastic Biasing
Observational Evidence for Stochastic Biasing
复制标题
随机偏差的观察证据
DOI：
10.1086/312068
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
B. Bromley
中科院分区：
文献类型：
--
作者：
Max Tegmark;B. Bromley
我们发现，在拉斯坎帕纳斯红移巡天的星系密度不能完全相关的基本质量分布，因为各种星系子种群并不完全相互关联，即使考虑到散粒噪声。这排除了简单的线性偏置的假设，并表明最近提出的随机偏置框架是必要的建模实际数据。
We show that the galaxy density in the Las Campanas Redshift Survey cannot be perfectly correlated with the underlying mass distribution since various galaxy subpopulations are not perfectly correlated with each other, even taking shot noise into account. This rules out the hypothesis of simple linear biasing and suggests that the recently proposed stochastic biasing framework is necessary for modeling actual data.