Black Holes with Yang-Mills Hair
  In Einstein-Maxwell theory black holes are uniquely determined by their mass, their charge and their angular momentum. This is no longer true in Einstein-Yang-Mills theory. We discuss sequences of neutral and charged SU(N) Einstein-Yang-Mills black holes, which are static spherically symmetric and asymptotically flat, and which carry Yang-Mills hair. Furthermore, in Einstein-Maxwell theory static black holes are spherically symmetric. We demonstrate that, in contrast, SU(2) Einstein-Yang-Mills theory possesses a sequence of black holes, which are static and only axially symmetric. 
B. Kleihaus (1), J. Kunz (2), A. Sood (2) and M. Wirschins (2) ((1)   NUI Maynooth, Ireland, (2) University Oldenburg, Germany)