{
  "bibcode": "2023GCN.33475....1A",
  "body": "G. E. Anderson (Curtin Uni.), J. K. Leung (U. Sydney), T. Murphy (U. Sydney), E. Lenc (CSIRO)\r\nL. Rhodes (U. Oxford), A. J. van der Horst (GWU), G. Rowell (U. Adelaide)\r\n\r\nWe observed GRB 230703A (Fermi GBM Team GCN 33405) with the Australia Telescope\r\nCompact Array (ATCA) between 2023-03-12_02:30 UT and 2023-03-12_07:30 UT\r\n(~4.5 days post-burst). In our preliminary analysis, we detect a radio source coincident\r\nwith the X-ray (Burrows et al. GCN 33429, GCN 33465) and optical (Levan et al. GCN 33439)\r\ncounterpart with a flux density of 120+/-30 microJy/beam at 9 GHz. We also obtain an\r\n3 sigma upper limit of 90 microJy/beam at 5.5 GHz.\r\n\r\nWe thank CSIRO staff for supporting these observations.\r\n\r\nThe ATCA is part of the Australia Telescope National Facility which is funded by the Australian\r\nGovernment for operation as a National Facility managed by CSIRO. We acknowledge the Gomeroi\r\npeople as the traditional owners of the Observatory site.",
  "circularId": 33475,
  "createdOn": 1678771386000,
  "email": "gemma.anderson@curtin.edu.au",
  "subject": "GRB 230307A: ATCA radio detection",
  "submitter": "Gemma Anderson at Curtin U  <gemma.anderson@curtin.edu.au>",
  "eventId": "GRB 230307A"
}