11 citations · 14 across the 9 of their papers we have counts for
9 papers
The Sinking Statistics of Dark Matter Subhalos Across Hierarchical Levels
Wenkang Jiang, Jiaxin Han, Kun Xu +6
We investigate the mergers among subhalos in a CDM simulation, focusing on two fundamental aspects overlooked by previous studies: 1) how to identify mergers robustly; 2) the st…
The tidal evolution of satellite galaxies in cosmological simulations: insights from COLIBRE
Feihong He, Jiaxin Han, Joop Schaye +12
We investigate the co-evolution of the stellar and dark matter mass of satellite galaxies using the COLIBRE cosmological hydrodynamical simulations with subhaloes resolved by the h…
The shape-velocity alignment of satellites forged by tidal locking and dynamical friction
Hao Yang, Wenting Wang, Ting S. Li +8
Utilizing the TNG50 simulation, we study two types of alignments for satellites/subhalos: 1) the alignment of their major axes with the galactocentric radial directions (radial ali…
A semi-analytical mock galaxy catalog for the CSST extragalactic surveys from the Jiutian simulations
Zhenlin Tan, Lizhi Xie, Jiaxin Han +17
We introduce a mock galaxy catalog built for the CSST extragalactic surveys using the primary runs of the Jiutian -body simulation suites. The catalogs are built by coupling the…
The Jiutian simulations for the CSST extra-galactic surveys
Jiaxin Han, Ming Li, Wenkang Jiang +23
We provide an overview of the Jiutian simulations, a hybrid simulation suite for the China Space Survey Telescope (CSST) extragalactic surveys. It consists of four complementary mo…
Self-similar decomposition of the hierarchical merger tree of dark matter halos
Wenkang Jiang, Jiaxin Han, Fuyu Dong +1
In the CDM universe, structure formation is generally not a self-similar process, while some self-similarity remains in certain statistics which can greatly simplify our descrip…
Why artificial disruption is not a concern for current cosmological simulations
Feihong He, Jiaxin Han, Zhaozhou Li
Recent studies suggest that cold dark matter subhalos are hard to disrupt and almost all cases of subhalo disruption observed in numerical simulations are due to numerical effects.…
Extending the unified subhalo model to warm dark matter
Feihong He, Jiaxin Han, Hongyu Gao +1
Using a set of high-resolution N-body simulations, we extend the unified distribution model of cold dark matter (CDM) subhaloes to the warm dark matter(WDM) case. The same model fr…
Is the core-cusp problem a matter of perspective: Jeans Anisotropic Modeling against numerical simulations
Wenting Wang, Ling Zhu, Zhaozhou Li +14
Mock member stars for 28 dwarf galaxies are constructed from the cosmological Auriga simulation, which reflect the dynamical status of realistic stellar tracers. The axis-symmetric…