  We present high resolution spectra of the AM CVn helium binary GP Com at two
different wavelength ranges. The spectra show the same flaring behaviour
observed in previous UV and optical data. We find that the central spike
contributes to the flare spectra indicating that its origin is probably the
compact object. We also detect that the central spike moves with orbital phase
following an S-wave pattern. The radial velocity semiamplitude of the S-wave is
\~10 km/s which indicates its origin is near the centre of mass of the system,
which in this case lies very close to the white dwarf. The Stark effect seems
to affect significantly the central spike of some of the lines suggesting that
it forms in a high electron density region. This again favours the idea that
the central spike originates in the white dwarf. We present Doppler maps
obtained for the emission lines which show three clear emission regions.
