  We report measurements for coherent rho^0 production, AuAu->AuAu rho^0, and
coherent rho^0 and e^+e^- pair production accompanied by mutual nuclear Coulomb
excitation, AuAu->Au*Au* rho^0 and AuAuee, in ultra-peripheral relativistic
gold-gold collisions (UPC). We discuss transverse momentum, mass, and rapidity
distributions. The two photon-process of e^+e^- pair production is an important
probe of strong field QED because of the large coupling Z*alpha=0.6. At
sqrt{s}=200GeV, the e^+e^- production cross section agrees with lowest order
QED calculations. The cross sections for coherent rho^0 production at
sqrt{s}=130 and 200GeV are in agreement with theoretical predictions. The
calculations for both, coherent e^+e^- and rho^0 production treat nuclear
excitation as independent process.
