Towards azimuthal anisotropy of direct photons
  Intensive radiation of magnetic bremsstrahlung type (synchrotron radiation) resulting from the interaction of escaping quarks with the collective confining colour field is discussed as a new possible mechanism of observed direct photon anisotropy. 
V.V. Goloviznin, A.M. Snigirev, G.M. Zinovjev
hep-ph nucl-th