TITLE: GCN CIRCULAR NUMBER: 35801 SUBJECT: GRB 240222A: ATCA radio observations DATE: 24/02/26 17:22:04 GMT FROM: jamesk.leung@utoronto.ca J. K. Leung (U. Toronto/HUJI), G. E. Anderson (Curtin University), S. Chastain (UNM), A. Gulati (U. Sydney), L. Rhodes (U. Oxford), A. J. van der Horst (GWU) on behalf of the PanRadio GRB collaboration The Australia Telescope Compact Array (ATCA) performed observations of GRB 240222A (Fermi GBM Team, GCN 35769; D'Avanzo et al., GCN 35770) at 5.5, 9, 16.7 and 21.2 GHz as part of the Large ATCA "PanRadio GRB" follow-up programme C3542 (PI. Anderson). ATCA observed from 2024-02-24 12:00 UT to 22:00 UT. In our preliminary analysis, we find no radio source coincident with the refined XRT position (Beardmore et al., GCN 35780) with 3 sigma upper limits of 75, 54, 69 and 159 microJy/beam at 5.5, 9.0, 16.7 and 21.2 GHz, respectively. 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. View this GCN Circular online at https://gcn.nasa.gov/circulars/35801. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...