Searching for physically related pairs of globular clusters

This article discusses the problems of binarity of globular clusters. The first step of the study was the analysis of existing data on globular cluster binarity, which involved finding published articles on this topic. Then, observational data on globular clusters were analyzed and the main characteristics related to their binarity were identified. It can be assumed that among the known globular clusters of stars there are paired clusters. This does not mean that they should be considered binary systems. But their detection is important from the point of view of the theory and scenario of the formation of the globular cluster systems. It would therefore be interesting to compile a list of putatively related globular clusters based on the similarity of their physical characteristics and calculate the total energies of these pairs. Within this study, the criteria of binarity of these objects by the main parameters have been developed and a list of 20 pairs of presumably physically related globular clusters compiled by means of a computer analysis of the Harris et al. catalog. It should be noted that a criterion of physical relatedness of pairs of globular clusters was developed taking into account the gravitational field of the Galaxy, and have applied it to two cluster pairs for the first time. It turned out that one of them can be considered a binary globular cluster. Therefore, it is possible to believe that the selection method is quite functional. When doing the selection, researchers may face problems associated with the difference in the values of physical characteristics in different catalogs. This may be due to the method used to determine these values. Therefore, it is possible to recommend compiling a review catalog before the selection