201 citations · 2k across the 65 of their papers we have counts for
28 papers · 1 filter
Damping of MHD Turbulence in A Partially Ionized Medium
Yue Hu, Siyao Xu, Lev Arzamasskiy +2
The coupling state between ions and neutrals in the interstellar medium plays a key role in the dynamics of magnetohydrodynamic (MHD) turbulence, but is challenging to study numeri…
Cosmic ray propagation in turbulent magnetic fields
Alex Lazarian, Siyao Xu, Yue Hu
Propagation of cosmic rays (CRs) in turbulent and magnetized astrophysical media is a long-standing problem that requires both understanding of the properties of turbulent magnetic…
Wide binary stars formed in the turbulent interstellar medium
Siyao Xu, Hsiang-Chih Hwang, Chris Hamilton +1
The ubiquitous interstellar turbulence regulates star formation and the scaling relations between the initial velocity differences and the initial separations of stars. We propose…
Multi-Phase Magnetic Fields in the Galaxy NGC 3627
Mingrui Liu, Yue Hu, A. Lazarian +2
Magnetic fields play an important role in the formation and evolution of a galaxy, but it is challenging to measure them by observation. Here we study the Seyfert galaxy NGC 3627's…
Turbulent Magnetic Field Amplification by the Interaction of Shock Wave and Inhomogeneous Medium
Yue Hu, Siyao Xu, James M. Stone +1
Magnetic fields on the order of 100 G observed in young supernova remnants cannot be amplified by shock compression alone. To investigate the amplification caused by turbulent d…
Role of magnetic fields in fueling Seyfert nuclei
Yue Hu, Alex Lazarian, Rainer Beck +1
Molecular gas is believed to be the fuel for star formation and nuclear activity in Seyfert galaxies. To explore the role of magnetic fields in funneling molecular gas into the nuc…
Turbulence in Milky Way Star-Forming Regions Traced by Young Stars and Gas
Trung Ha, Yuan Li, Marina Kounkel +3
The interstellar medium (ISM) is turbulent on all scales and in all phases. In this paper, we study turbulence with different tracers in four nearby star-forming regions: Orion, Op…
The Velocity Statistics of Turbulent Clouds in the Presence of Gravity, Magnetic fields, Radiation, and Outflow Feedback
Yue Hu, Christoph Federrath, Siyao Xu +1
The interaction of turbulence, magnetic fields, self-gravity, and stellar feedback within molecular clouds is crucial for understanding star formation. We study the effects of self…
Damping of Alfvén waves in MHD turbulence and implications for cosmic ray streaming instability and galactic winds
Alex Lazarian, Siyao Xu
Alfvénic component of MHD turbulence damps Alfvénic waves. The consequences of this effect are important for many processes, from cosmic ray (CR) propagation to launching outflows…
Superdiffusion of Cosmic Rays in Compressible Magnetized Turbulence
Yue Hu, A. Lazarian, Siyao Xu
Owing to the complexity of turbulent magnetic fields, modeling the diffusion of cosmic rays is challenging. Based on the current understanding of anisotropic magnetohydrodynamic (M…
Small-scale turbulent dynamo in astrophysical environments: nonlinear dynamo and dynamo in a partially ionized plasma
Siyao Xu, Alex Lazarian
Small-scale turbulent dynamo is responsible for the amplification of magnetic fields on scales smaller than the driving scale of turbulence in diverse astrophysical media. Most ear…
Anisotropic Turbulence in Position-Position-Velocity Space: Probing Three-Dimensional Magnetic Fields
Yue Hu, A. Lazarian, Siyao Xu
Direct measurements of three-dimensional magnetic fields in the interstellar medium (ISM) are not achievable. However, the anisotropic nature of magnetohydrodynamic (MHD) turbulenc…
Measuring magnetization with rotation measures and velocity centroids in supersonic MHD turbulence
Siyao Xu, Yue Hu
The interstellar turbulence is magnetized and thus anisotropic. The anisotropy of turbulent magnetic fields and velocities is imprinted in the related observables, rotation measure…
Measuring Turbulence with Young Stars in the Orion Complex
Trung Ha, Yuan Li, Siyao Xu +2
Stars form in molecular clouds in the interstellar medium (ISM) with a turbulent kinematic state. Newborn stars therefore should retain the turbulent kinematics of their natal clou…
Anisotropies in Compressible MHD Turbulence: Probing Magnetic Fields and Measuring Magnetization
Yue Hu, Siyao Xu, A. Lazarian
Probing magnetic fields in the interstellar medium (ISM) is notoriously challenging. Motivated by the modern theories of magnetohydrodynamic (MHD) turbulence and turbulence anisotr…
Nonuniversal interstellar density spectra probed by pulsars
Siyao Xu, Bing Zhang
The Galactic interstellar turbulence affects the density distribution and star formation. We introduce a new method of measuring interstellar turbulent density spectra by using the…
Turbulence in a self-gravitating molecular cloud core
Siyao Xu, Alex Lazarian
Externally driven interstellar turbulence plays an important role in shaping the density structure in molecular clouds. Here we study the dynamical role of internally driven turbul…
Direct Detection of Black Hole-Driven Turbulence in the Centers of Galaxy Clusters
Yuan Li, Marie-Lou Gendron-Marsolais, Irina Zhuravleva +16
Supermassive black holes (SMBHs) are thought to provide energy that prevents catastrophic cooling in the centers of massive galaxies and galaxy clusters. However, it remains unclea…
Projected velocity statistics of interstellar turbulence
Siyao Xu
Velocity statistics is a direct probe of the dynamics of interstellar turbulence. Its observational measurements are very challenging due to the convolution between density and vel…
On the formation of density filaments in the turbulent interstellar medium
Siyao Xu, Suoqing Ji, A. Lazarian
This study is motivated by recent observations on ubiquitous interstellar density filaments and guided by modern theories of compressible magnetohydrodynamic (MHD) turbulence. The…
Studying Magnetic Fields in Star Formation and the Turbulent Interstellar Medium
Laura Fissel, Charles L. H. Hull, Susan E. Clark +10
Understanding the physics of how stars form is a highly-prioritized goal of modern Astrophysics, in part because star formation is linked to both galactic dynamics on large scales…
Turbulent dynamo in a weakly ionized medium
Siyao Xu, Sudip K. Garain, Dinshaw S. Balsara +1
The small-scale turbulent dynamo is an important process contributing to the cosmic magnetization. In partially ionized astrophysical plasmas, the dynamo growth of magnetic energy…
Magnetohydrodynamic turbulence and turbulent dynamo in a partially ionized plasma
Siyao Xu, Alex Lazarian
Astrophysical fluids are turbulent, magnetized and frequently partially ionized. As an example of astrophysical turbulence, the interstellar turbulence extends over a remarkably la…
On the formation of density filaments in the turbulent interstellar medium
Siyao Xu, Alex Lazarian
This study is motivated by recent observations on the ubiquitous interstellar density filaments and guided by the modern theory of magnetohydrodynamic (MHD) turbulence. The interst…