62 citations · 154 across the 7 of their papers we have counts for
7 papers
Propagating Instability for Wave Dark Matter
Ui-Han Zhang, Tak-Pong Woo, Tzihong Chiueh
In the early Universe, large-scale flows were omnipresent, and the flow collisions produced sheets and filaments. This phenomenon occurs for both particle and wave dark matter. But…
Testing extreme-axion wave dark matter using the BOSS Lyman-Alpha forest data
Ka-Hou Leong, Hsi-Yu Schive, Ui-Han Zhang +1
Using cosmological particle hydrodynamical simulations and uniform ultraviolet backgrounds, we compare Lyman- forest flux spectra predicted by the conventional cold dark matter…
Magnetohydrodynamics with GAMER
Ui-Han Zhang, Hsi-Yu Schive, Tzihong Chiueh
GAMER, a parallel Graphic-processing-unit-accelerated Adaptive-MEsh-Refinement hydrodynamic code, has been extended to support magnetohydrodynamics (MHD) with both the corner-trans…
Cosmological Perturbations of Extreme Axion in the Radiation Era
Ui-Han Zhang, Tzihong Chiueh
Sub-horizon perturbations under the extreme initial condition of the axion model are investigated, where initial axion angles start near the potential maximum. This work focuses on…
Evolution of linear wave dark matter perturbations in the radiation-dominant era
Ui-Han Zhang, Tzihong Chiueh
Linear perturbations of the wave dark matter, or dark matter (DM), of particle mass eV in the radiation-dominant era are analyzed, and the matter power spectr…
Sound-Triggered Collapse of Stably Oscillating Low-Mass Cores in a Two-Phase Interstellar Medium
Ui-Han Zhang, Hsi-Yu Schive, Tzihong Chiueh
Inspired by Barnard 68, a Bok globule, that undergoes stable oscillations, we perform multi-phase hydrodynamic simulations to analyze the stability of Bok globules. We show that a…
Directionally Unsplit Hydrodynamic Schemes with Hybrid MPI/OpenMP/GPU Parallelization in AMR
Hsi-Yu Schive, Ui-Han Zhang, Tzihong Chiueh
We present the implementation and performance of a class of directionally unsplit Riemann-solver-based hydrodynamic schemes on Graphic Processing Units (GPU). These schemes, includ…