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We compare the observed spatial offsets of short gamma-ray bursts from theirhost galaxies with their predicted distributions, assuming that they originatein double neutron star binaries that form from field stars. We find that, forthe majority of bursts, this model is sufficient to explain the observedoffsets, although there is a trend towards larger offsets than predicted. Oneburst, GRB 060502B, has an offset that is clearly anomalous. We discusspossible reasons for the large offsets, including host galaxymisidentification, and suggest that some of the largest-offset bursts mayoriginate in the merger of double neutron star binaries that form dynamicallyin the cores of globular clusters.

Short gamma-ray bursts: evidence for an origin in globular clusters?