Publication date: Dec 2014
Abstract:
We study circular motion of charged test particles in the field of magnetized slowly rotating neutron stars. The gravitational field is approximated by the Lense-Thirring geometry, the magnetic field is of the standard dipole character. Using a fullyrelativistic approach we determine influence of the electromagnetic interaction (both attractive and repulsive) on the circular motion. We focus on the behaviour of the orbital frequency of the motion. Components of the four-velocity of the orbiting charged test particles are obtained by numerical solution of equations of motion. The role of the combined effect of the neutron star magnetic field and its rotation in the character of the orbital frequency is discussed. It is demonstrated that even in the Lense-Thirring spacetime particles being static relative to distant observers can exist due to the combined gravo-electromagnetic interactionc
Authors:
Bakala, Pavel; Urbanec, Martin; Šrámková, Eva; Stuchlík, Zdeněk; Török, Gabriel;