3 papers
astro-ph.IM2026
An End-to-End Numerical Framework for Tidal Disruption Events with AthenaK
Hong-Xuan Jiang, Mengqi Yang, David A. Velasco-Romero +4
In a tidal disruption event (TDE), a black hole (BH) tears apart a star, whose bound debris returns over many orbits to form an accretion disk. We present a framework built on the…
physics.plasm-ph2025
Bell Plesset Effects on Rayleigh Taylor Instability of Three Dimensional Spherical Geometry
Xilai Li, Yilin Wu, Zhengnuo Chen +2
We develop a weakly nonlinear, multi-mode theory for the Rayleigh-Taylor instability (RTI) on a time-varying spherical interface, fully incorporating mode couplings and the Bell-Pl…
astro-ph.EP2025
Engulfment of Eccentric Planets by Giant Stars: Hydrodynamics and Light Curves
Mengqi Yang, Dong Lai, Fuyuan Wu +1
Recent observations suggest that planetary engulfment by a giant star may produce radiation that resembles subluminous red novae. We present three-dimensional hydrodynamical simula…