Binary Globular Clusters
  The dynamics of a close binary system of globular clusters is considered. It is shown that the star transfer process from one of the components to the other should lead to the decrease of dimension of the first cluster with simultaneous increase of the dimension of the second cluster. The rates of variations of clusters' sizes due to the mutual tidal interaction between the components, as well as of the orbital rotation of the binary system on the evolution of clusters' sizes, are estimated. The results may be attributed to the double nuclei observed in certain galaxies. 
G.A.Gurzadyan