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Structures in a class of magnetized scale-free discs
Yue Shen, Xin Liu, Yu-Qing Lou
We construct analytically stationary global configurations for both aligned and logarithmic spiral coplanar magnetohydrodynamic (MHD) perturbations in an axisymmetric background MH…
Outflows and inflows in astrophysical systems
Yue Shen, Yu-Qing Lou
We seek for self-similar solutions describing the time-dependent evolution of self-gravity systems with either spherical symmetry or axisymmetric disk geometry. By assuming self-si…
Shocked similarity collapses and flows in star formation processes
Yue Shen, Yu-Qing Lou
We propose self-similar shocked flow models for certain dynamical evolution phases of young stellar objects (YSOs), `champagne flows' of H {\sevenrm II} regions surrounding OB star…
Gravitationally coupled scale-free discs
Yue Shen, Yu-Qing Lou
In a composite fluid system of two gravitationally coupled barotropic scale-free discs bearing a rotation curve and a power-law surface mass density $Σ_0\propto r…
Global axisymmetric stability analysis for a composite system of two gravitationally coupled scale-free discs
Yue Shen, Yu-Qing Lou
In a composite system of gravitationally coupled stellar and gaseous discs, we perform linear stability analysis for axisymmetric coplanar perturbations using the two-fluid formali…