Rare radiative charm decays in the standard model and beyond

Motivated by the recent measurement of $D^0torho^0gamma$ improved standard model (SM) predictions for branching ratios and CP asymmetries of radiative charm decay are given.Weak annihilation induced decays are probes of non-perturbative QCD approaches.Rare decays probe the SM and physics beyond the SM, e.g.~leptoquark and supersymmetric models.Opportunities with $Lambda_cto pgamma$ for future polarization measurements are presented.