3 papers
astro-ph.CO2018
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…
physics.comp-ph2018
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…
astro-ph.CO2017
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…