  We investigate the large photon v2 puzzle and the two time scales of thermal
and chemical equilibrium in heavy ion collisions. The two-time-scale picture
has a weak effect on the transverse moemntum spectrum of direct photons, but a
strong effect on the elliptic flow of direct photons. Thus both the spectrum
and the elliptic flow of direct photons may be explained with hydro evolution
constrained with hadron data. In such a picture, a gluon dominant matter
appears in heavy ion collisions. This new matter may impact strongly to other
fields such as astrophysics and cosmology.
