Speaker
Description
The dynamics of charged particles in neutron star magnetospheres, represented by a dipolar magnetic field in Schwarzschild spacetime, are influenced by an effective potential governing circular orbits on and off the equatorial plane. Focusing on radiation reaction, we use the Landau-Lifshitz approximation to analyze how it modifies particle motion across equatorial, off-equatorial, and chaotic orbits. We show that under an attractive Lorentz force, radiation reaction drives particles toward the neutron star surface. For repulsive forces, it broadens equatorial orbits and shifts off-equatorial paths toward the equatorial plane if near enough; otherwise, they evolve toward the surface. The critical latitude for this transition is determined numerically as a function of electromagnetic coupling strength.