  The large-scale distribution of globular clusters in the central region of
the Coma cluster of galaxies is derived through the analysis of Hubble Space
Telescope/Advanced Camera for Surveys data. Data from three different HST
observing programs are combined in order to obtain a full surface density map
of globular clusters in the core of Coma. A total of 22,426 Globular cluster
candidates were selected through a detailed morphological inspection and the
analysis of their magnitude and colors in two wavebands, F475W (Sloan g) and
F814W (I). The spatial distribution of globular clusters defines three main
overdensities in Coma that can be associated with NGC 4889, NGC 4874, and IC
4051 but have spatial scales five to six times larger than individual galaxies.
The highest surface density of globular clusters in Coma is spatially
coincidental with NGC 4889. The most extended overdensity of globular clusters
is associated with NGC 4874. Intracluster globular clusters also form clear
bridges between Coma galaxies. Red globular clusters, which agglomerate around
the center of the three main subgroups, reach higher surface densities than
blue ones.
