Ilkka Helenius (University of Jyväskylä)
Lamia Benhabib (Ecole Polytechnique (FR))
Sarah Campbell (Iowa State University)
Thermal radiation emitted by the quark-gluon plasma provides information on the initial temperature of the collision and thermalization of the QGP. Experimentally it is difficult to separate thermal photons from the measured direct photon spectrum. In PHENIX, we measure direct photons in the central arm using two complementary methods, one with the electromagnetic calorimeter (EMC) and...