  Using a model for the evolution of the fireball created in Au-Au collisions
at full RHIC energy which reproduces the hadronic single particle spectra and
two-particle correlations we calculate thermal photon emission from the hot
partonic and hadronic matter. We present predictions for both the emitted
photon transverse momentum spectrum and Hanbury-Brown Twiss (HBT) correlations.
Surprisingly, we find that due to the strong transverse flow in the model
photon emission from hadronic matter is sizeable in the momentum range expected
to be dominated by thermal emission and that consequently the HBT radius
parameters do not reflect exclusively properties of the partonic evolution
phase. We compare to another model calculation where pre-equilibrium photon
emission is dominant to illustrate the differences of both approaches.
