  A semiclassical investigation of the electromagnetic radiation emitted by a
charged particle in a radially freely falling motion in Schwarzschild spacetime
is carried out. We use quantum field theory at tree level to obtain the
one-particle-emission amplitudes. We analyze and compare the energy spectrum
and total energy released, which are calculated from these amplitudes, for
particles with varying initial positions and for particles originating from
infinity with varying kinetic energy. We also compare the results with those
due to a falling charged "string" extended in the radial direction.
