Halo Assembly Bias in Hierarchical Structure Formation
نویسندگان
چکیده
منابع مشابه
Halo Assembly Bias in Hierarchical Structure Formation
We investigate the origin of halo assembly bias, the dependence of halo clustering on assembly history. We relate halo assembly to peak properties measured in the Lagrangian space of the initial linear Gaussian random density field, and show how these same Lagrangian properties determine large-scale bias. We focus on the two regimes where assembly bias has been observed to be significant: at ma...
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The clustering of dark halos depends not only on their mass but also on their assembly history, a dependence we term ‘assembly bias’. Using a galaxy formation model grafted onto the Millennium Simulation of the ΛCDM cosmogony, we study how assembly bias affects galaxy clustering. We compare the original simulation to ‘shuffled’ versions where the galaxy populations are randomly swapped among ha...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2008
ISSN: 0004-637X,1538-4357
DOI: 10.1086/591512