Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Ho, Ka-Wai"'
Streaming Instability (SI) in dust has long been thought to be a promising process in triggering planetesimal formation in the protoplanetary disks (PPDs). In this study, we present the first numerical investigation that models the SI in the vertical
Externí odkaz:
http://arxiv.org/abs/2407.17012
The term "unstable neutral media" (UNM) has traditionally been used to describe the transient phase formed between the warm and cold neutral hydrogen (HI) phases and has not been the focus of HI studies. However, recent observations suggest that the
Externí odkaz:
http://arxiv.org/abs/2407.14199
Publikováno v:
Rev. Mod. Plasma Phys. 8, 21 (2024)
The trending term "filament" is extensively used in the interstellar medium (ISM) and the star formation community, and is believed to be one of the most important objects that gauge molecular cloud and star formation. However, the physical definitio
Externí odkaz:
http://arxiv.org/abs/2404.19101
Despite being energetically important, the effect of cosmic rays on the dynamics of the interstellar medium (ISM) is assumed to be negligible because the cosmic ray energy diffusion coefficient parallel to the magnetic field is relatively large. Usin
Externí odkaz:
http://arxiv.org/abs/2403.07976
We study the properties of sub-Alfvenic magnetohydrodynamic (MHD) turbulence, i.e., turbulence with Alfven Mach number $M_A=V_L/V_A<1$, where $V_L$ is the velocity at the injection scale and $V_A$ is the Alfven velocity. We demonstrate that weak turb
Externí odkaz:
http://arxiv.org/abs/2312.05399
Magnetic fields and their dynamical interplay with matter in galaxy clusters contribute to the physical properties and evolution of the intracluster medium. However, the current understanding of the origin and properties of cluster magnetic fields is
Externí odkaz:
http://arxiv.org/abs/2306.10011
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 of these striations are still debatable. Some studies suggest that the
Externí odkaz:
http://arxiv.org/abs/2306.10005
Autor:
Gong, Munan, Ho, Ka-Wai, Stone, James M., Ostriker, Eve C., Caselli, Paola, Grassi, Tommaso, Kim, Chang-Goo, Kim, Jeong-Gyu, Halevi, Goni
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 observational tracers, and build the molecular foundation of life. We present the
Externí odkaz:
http://arxiv.org/abs/2305.04965
Autor:
Ho, Ka Wai, Lazarian, Alex
Publikováno v:
MNRAS 2023
Recent development of the velocity gradient technique shows the {\toreferee capability} of the technique in the way of tracing magnetic fields morphology in diffuse interstellar gas and molecular clouds. In this paper, we perform the numerical system
Externí odkaz:
http://arxiv.org/abs/2301.13458
We report the evidence for the existence of the universal, continuous turbulent cascade of velocity fluctuations with Kolmogorov -5/3 slope spanning 6 orders of length scales, from $10^4$ pc down to $10^{-2}$ pc. This was achieved by applying our inn
Externí odkaz:
http://arxiv.org/abs/2204.13760