6 papers · 1 filter
Galactic Contrail in NGC 3627 caused by Dwarf Galaxy Candidate or Massive Black Hole Flyby
Mengke Zhao, Guang-Xing Li
We report the discovery of a kpc scale molecular contrail in the spiral galaxy NGC 3627, a narrow structure spanning 8 kpc in length with a width of 200 pc and an extreme aspect ra…
Tidally-Controlled Fragmentation around Black Holes, Massive Clumps, Protostars, and the Galactic Center
Guang-Xing Li
Gravity plays important roles at multiple scales in the universe. An important, yet often neglected, role of gravity is its ability in driving anisotropic fragmentation through tid…
Equation vs. AI: Predict Density and Measure Width of molecular clouds by Multiscale Decomposition
Mengke Zhao, Guang-Xing Li, Duo Xu +1
Interstellar medium widely exists in the universe at multi-scales. In this study, we introduce the {\it Multi-scale Decomposition Reconstruction} method, an equation-based model de…
Super-Jeans fragmentation in massive star-forming regions revealed by triangulation analysis
Guang-Xing Li, Mengke Zhao, Xing Lu
Understanding the fragmentation of the gas cloud and the formation of massive stars remains one of the most challenging questions of modern astrophysical research. Either the gas f…
Slope of Magnetic Field-Density Relation as An Indicator of Magnetic Dominance
Mengke Zhao, Guang-Xing Li, Keping Qiu
The electromagnetic field is a fundamental force in nature that regulates the formation of stars in the universe. Despite decades of efforts, a reliable assessment of the importanc…
Magnetic, Kinetic, and Transition Regime: Spatially-Segregated Structure of Compressive MHD Turbulence
Guang-Xing Li, Mengke Zhao
Turbulence is a complex physical process prevalent in modern physics, particularly in ionized environments like interstellar gas, where magnetic fields play a dynamic role. However…