Publication date: Feb 2013
We study non-geodesic corrections to the quasicircular 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
fully-relativistic approach we determine influence of the
electromagnetic interaction (both attractive and repulsive) on the
quasicircular motion. We focus on the behaviour of the orbital and
epicyclic frequencies of the motion. Components of the four-velocity of
the orbiting charged test particles are obtained by numerical solution
of equations of motion, the epicyclic frequencies are obtained by using
the standard perturbative method. The role of the combined effect of the
neutron star magnetic field and its rotation in the character of the
orbital and epicyclic frequencies is discussed.
Bakala, Pavel; Urbanec, Martin; Šrámková, Eva; Stuchlík, Zdeněk; Török, Gabriel;