Comment on "Analysis of hard two-photon correlations measured in heavy-ion reactions at intermediate energies"

In a recent Rapid Communication [Phys. Rev. C {bold 53}, R553 (1996)] experimental hard-photon correlations have been compared to Boltzmann-Uehling-Uhlenbeck (BUU) calculations. It is concluded that the data are best described with a single photon source at the beginning of the reaction and that photons coming from the late evolution of the system are just an artifact of the BUU approach. In this Comment we discuss some arguments used by the authors and their conclusions, and demonstrate that BUU calculations, properly compared to data, are consistent with the previously established interpretation of hard photons being emitted from two distinct sources. {copyright} {ital 1996 The American Physical Society.}