Relativistic effects in superluminal jets and neutron star winds

Abstract

We give a complete solution to the problem of radial motion of a test particle through the combined gravi-tational and radiation field of a spherical star. The star is assumed to radiate isotropically from each point of its surface. The radiative force acting on the particle is assumed not to depend on the frequency of radiation. There is no feedback from the particle motion to the background radiation field. All the effects of special and general relativity are included with no approximation.