8 papers
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…
Volume Density Mapper: 3D Density Reconstruction Algorithm for Molecular Clouds
Guang-Xing Li, Mengke Zhao
The interstellar medium (ISM) exhibits complex, multi-scale structures that are challenging to study due to their projection into two-dimensional (2D) column density maps. We prese…
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…
Dispersion relation for the linear theory of relativistic Rayleigh Taylor instability in magnetized medium revisited
Qiqi Jiang, Guang-Xing Li, Chandra B. Singh
The Rayleigh-Taylor instability (RTI) arises at the interface between two fluids of different densities, notably when a heavier fluid lies above a lighter one in an effective gravi…
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…