3 papers
astro-ph.EP2025
Saturn's G ring: insights from the dynamical evolution of dust particles from the G-ring arc
Zhenghan Chen, Xiaodong Liu, Kun Yang
To explore the formation and properties of Saturn's G ring, we study the dynamics of micron-sized dust particles originating from the arc of debris near the inner edge of the ring.…
astro-ph.EP2025
Investigation of lunar ejecta dynamics: Particles reaching the near-Earth space and their effect on Earth-based observation
Kun Yang, Yu Jiang, Youpeng Liang +1
Aims. Particles ejected from the lunar surface via hypervelocity impacts form a torus between the Earth and the Moon. According to our previous study (Yang et al., A\&A, 659, A120)…
math.NA2025
An adaptive symplectic integrator for gravitational dynamics
Keqi Ye, Zizhe Cai, Mingji Wang +2
This paper presents an adaptive symplectic integrator, SQQ-PTQ, developed on the basis of the fixed-step symplectic integrator SQQ. To mitigate the Runge phenomenon, SQQ-PTQ employ…