T. Laskar (University of Bath), S. Bhandari (CSIRO), K. D. Alexander
(Northwestern), E. Berger (Harvard), R. Chornock (UC Berkeley), D.
Coppejans (Northwestern), M. Drout (U. Toronto), H. van Eerten (University
of Bath), Wen-fai Fong (Northwestern), C. Guidorzi (U. Ferrara), R.
Margutti (UC Berkeley), C. G. Mundell (University of Bath), P. Schady
(University of Bath), and G. Schroeder (Northwestern) report:
"We observed GRB 210702A (Lien et al., GCN 30351) with the Australia
Telescope Compact Array (ATCA) at multiple frequencies beginning on 2021
July 06 05:00 UT. We detect a radio counterpart at 16.7, 21.2, and 34 GHz
at a position consistent with the X-ray position (D'Elia et al., GCN
30358), optical position (Lien et al., GCN 30351; Kuin et al., GCN 30356),
and mm-band position (Laskar et al., GCN 30423) with a flux density of ~
0.8 mJy at 34 GHz at a mid-time of 3.50 days after the burst.
Further observations are planned.
We thank the CSIRO staff for approving and scheduling these observations."