  We compute the photon yield and elliptic flow coefficient in relativistic
heavy-ion collisions from gluon fusion and splitting processes induced by a
magnetic field for different centralities. The calculation accounts for the
intense magnetic field and the high gluon occupation number at early times. The
photon production induced by these process represents an excess contribution
over calculations without magnetic field effects. We compare this excess to the
difference between PHENIX data and recent hydrodynamic calculations for the
photon transverse momentum distribution and elliptic flow coefficient $v_2$.
The time evolution of the field strength and reaction volume is computed using
UrQMD. We show that with reasonable values for the saturation scale, the
calculation helps to better describe the experimental results obtained at RHIC
energies for the lowest part of the transverse photon momentum at different
centralities.
