2025/08/03 by David Rumler, Rumler, David
Physics and Astronomy · #Astro and Planetary Science #Astrophysics and Star Formation Studies #Dust and Plasma Wave Phenomena #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc)
paper · pdf · doi:10.48550/arxiv.2508.01732
openalex publication_date 2025/08/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Stability of circular orbits of the dust particles within a charged rotating disc of dust with respect to perturbations in the equatorial plane is analyzed. Within Einstein-Maxwell theory, the charged rotating disc of dust is an axisymmetric, stationary solution given in terms of a post-Newtonian expansion. The disc solution is characterized by a rigid rotation around the axis of symmetry and a constant specific charge ε. It is found that for ε<1 all realized dust particle orbits are stable and for ε=1 all dust particles are in marginally stable states.