6 papers
Fragmentation and tidal locking in young quadruple systems
Xunchuan Liu
Young quadruple systems provide a particularly simple setting in which the connection between successive levels of fragmentation can be studied. Motivated by the recurring symmetri…
Kolmogorov turbulence across multi-fractal gas in Polaris Flare
Xunchuan Liu, Pak-Shing Li, Yihuan Di
We reveal a pristine, scale-invariant 3D Kolmogorov velocity cascade () spanning --~pc in the Polaris Flare using \texttt{PPCOS} $^{12}\text{C…
Ram pressure shaping high-velocity cloud droplets --- FAST HI observations of HVC AC-III and theoretical interpretation
Xunchuan Liu
FAST HI observations reveal unprecedented internal structures within the high-velocity cloud (HVC) AC-III, which consists of several coherent subclumps (D1--D6). These subclumps ex…
Accelerating star formation of dense clumps
Xunchuan Liu
We present a statistical framework that establishes an accelerating star formation scenario for dense clumps using ATLASGAL and ALMAGAL samples. By employing the cumulative distrib…
Turbulence in virtual: II. Origin of skewness and dual fraction processes
Xunchuan Liu
Turbulence is a mysterious phenomenon in physical systems and plays a critical role in the interstellar medium (ISM). Previous simulations and observations have shown that the prob…
Turbulence in cascading: Origin of the variance and skewness of density function
Xunchuan Liu
Turbulent systems typically exhibit log-normal volume density probability density functions (PDFs) on the scale, with their variance () and skewness () empirical…