76 citations · 352 across the 22 of their papers we have counts for
19 papers · 1 filter
The cosmic ray ionization rate from H3+ observations can be overestimated due to neglect of time-dependent chemistry
Ka Wai Ho, Munan Gong, Kedron Silsbee +1
The cosmic ray ionization rate (CRIR) is a key parameter governing the physical, chemical and thermal evolution of the interstellar medium. The primary technique for measuring the…
Tracing magnetic field in super-Alfvenic turbulence with Gradient Technique
Ka Wai Ho, Alex Lazarian
Super-Alfvenic turbulence is important for many astrophysical objects, particularly galaxy clusters. In this paper, we explore the accuracy of Synchrotron Intensity Gradients (SIGs…
Statistical signatures of interstellar turbulence in dust polarization maps
Ka Wai Ho, Ka Ho Yuen, Raphael Flauger +1
We present results from a high-resolution interstellar turbulence simulation and show that it closely reproduces recent measurements. Our model captures the scaling of $EE…
Sub-Alfvenic Turbulence: Magnetic to Kinetic Energy Ratio, Modification of Weak Cascade and Implications for Magnetic Field Strength Measurement
Alex Lazarian, Ka Wai HO, Ka Ho Yuen +1
We study the properties of sub-Alfvenic magnetohydrodynamic (MHD) turbulence, i.e., turbulence with Alfven Mach number , where is the velocity at the injection…
Nature of Striation in 21 cm Channel Maps: Velocity Caustics
Yue Hu, A. Lazarian, D. Alina +2
The alignment of striated intensity structures in thin neutral hydrogen (HI) spectroscopic channels with Galactic magnetic fields has been observed. However, the origin and nature…
Implementation of chemistry in the Athena++ code
Munan Gong, Ka-Wai Ho, James M. Stone +6
Chemistry plays a key role in many aspects of astrophysical fluids. Atoms and molecules are agents for heating and cooling, determine the ionization fraction, serve as observationa…