%0 Journal Article %T Supersymmetric Gauge Theories and Gravitational Instantons %A Sergey A. Cherkis %J Physics %D 1998 %I arXiv %X Various string theory realizations of three-dimensional gauge theories relate them to gravitational instantons, Nahm equations and monopoles. We use this correspondence to model self-dual gravitational instantons of $D_k$-type as moduli spaces of singular monopoles, find their twistor spaces and metrics. %U http://arxiv.org/abs/hep-th/9807237v1