TITLE: GCN CIRCULAR NUMBER: 12564 SUBJECT: GRB111107A: Further ATCA observations - no detection DATE: 11/11/18 00:25:22 GMT FROM: Paul Hancock at U of Sydney Paul J. Hancock, Tara Murphy (U of Sydney) Following the possible detection reported in GCN12558 we again observed GRB111107A (GCN12534) with the Australian Telescope Compact Array (ATCA) on Nov 14 from 16:54UT to 18:43UT (~7.5 days after the GRB trigger). We detect no emission from the GRB with a 3sigma limit of 180 uJy and 150 uJy at 5.5GHz and 9 GHz respectively. Given that the 5.5 GHz radio luminosity of the GRB is expected to increase over at least the first 7.5 days post burst, we conclude that the possible 4sigma detection reported in GCN12558 is a result of the nearby source SUMSS J083735-663107. No further observations are planned. We thank the observatory staff for scheduling and supporting these observations.