TITLE:   GCN CIRCULAR
NUMBER:  37952
SUBJECT: EP240919a / GRB 240919A: ATCA Detection of Radio Counterpart
DATE:    24/10/30 00:44:32 GMT
FROM:    agul8829@uni.sydney.edu.au

A. Gulati (USyd), A. J. Castro-Tirado (IAA-CSIC Granada), T. Murphy (USyd)

We observed fast X-ray transient EP240919a (Liang et al. GCN 37561; Liang et al. GCN 37563) with the Australia Telescope Compact Array (ATCA) at multiple frequencies post-burst. In our preliminary analysis, we detect a radio counterpart at 9 GHz with a flux density of ~73.5 uJy at a position consistent with the X-ray afterglow position (GCNC 37585). Further observations are planned.

We thank the CSIRO Space and Astronomy staff for supporting these observations.
We acknowledge the Gomeroi people as the traditional owners of the Observatory site. The Australia Telescope Compact Array is part of the Australia Telescope National Facility (https://ror.org/05qajvd42) which is funded by the Australian Government for operation as a National Facility managed by CSIRO.