8 papers
Fuzzy dark matter simulations
Hsi-Yu Schive
Fuzzy dark matter (FDM), composed of ultralight bosons, exhibits intricate wave phenomena on galactic scales. Compared to cold dark matter, FDM simulations are significantly more c…
Cool-Core Destruction in Merging Clusters with AGN Feedback and Radiative Cooling
Shuang-Shuang Chen, Hsiang-Yi Karen Yang, Hsi-Yu Schive +3
The origin of cool-core (CC) and non-cool-core (NCC) dichotomy of galaxy clusters remains uncertain. Previous simulations have found that cluster mergers are effective in destroyin…
Universal numerical convergence criteria for subhalo tidal evolution
Barry T. Chiang, Frank C. van den Bosch, Hsi-Yu Schive
Dark matter subhalos and satellite galaxies in state-of-the-art cosmological simulations still suffer from the ``overmerging'' problem, where inadequate force and/or mass resolutio…
The tidal evolution of anisotropic subhaloes: A new pathway to creating isotropic and cored satellites
Barry T. Chiang, Frank C. van den Bosch, Hsi-Yu Schive
It is common practice, both in dynamical modelling and in idealised numerical simulations, to assume that galaxies and/or dark matter haloes are spherical and have isotropic veloci…
Infalling ultra-faint dwarfs as emissaries of the Axiverse
A. Pozo, T. Broadhurst, H. N. Luu +8
Recent discoveries of ultra-faint dwarf galaxies (UFDs) infalling onto the Milky Way, namely Leo K \& M at kpc, considerably strengthens the case that UFDs constitute…
Deciphering the Soliton-Halo Relation in Fuzzy Dark Matter
Pin-Yu Liao, Guan-Ming Su, Hsi-Yu Schive +3
Soliton cores at the center of fuzzy dark matter (FDM) halos provide a promising way to distinguish FDM from other dark matter models. However, the relation between solitons and th…