5 papers
Correlation between baryonic process and galaxy assembly bias
Zilan Xiao, Junyu Hua, Zhongxu Zhai +2
Galaxy assembly bias (GAB) is the dependence of galaxy clustering on secondary properties beyond halo mass. In this work, we study the connections between GAB and baryonic processe…
A graph-based Neural Network surrogate model for accelerating semi-analytical model of galaxy formation and evolution
Xuejie Li, Zhongxu Zhai, Xiaohu Yang +2
Understanding how galaxy populations emerge and evolve from the growth of dark matter structure is a central challenge in galaxy formation theory. Semi-analytic models (SAMs) provi…
What can galaxy clustering really tell us about the galaxy-halo connections?
Xiaoju Xu, Xiaohu Yang, Zhongxu Zhai +6
Subhalo abundance matching (SHAM) is a commonly used framework for modeling the galaxy-halo connection. Yet, its standard implementation has difficulty reproducing the observed gal…
Cosmology with voids from the Nancy Grace Roman Space Telescope
Giovanni Verza, Giulia Degni, Alice Pisani +7
We provide an accurate forecast of the expected constraining power from the main void statistics -- the void size function and the void-galaxy cross-correlation function -- to be m…
Clustering analysis of BOSS-CMASS galaxies with semi-analytical model for galaxy formation and halo occupation distribution
Zhongxu Zhai, Andrew Benson, Yun Wang
The spatial distribution of massive and luminous galaxies have provided important constraints on the fundamental cosmological parameters and physical processes governing galaxy for…