{
  "bibcode": "2022GCN.32791....1M",
  "body": "M. Marongiu, E. Egron, A. Pellizzoni (INAF/OAC), S. Righini (INAF/IRA), \nC. Guidorzi (UniFe), and S. Mulas (UniCa), report:\n\nWe observed GRB 221009A (Dichiara et al. GCN 32632) with the Medicina \nRadio Telescope (www.radiotelescopes.inaf.it) through single-dish \nimaging in X-band (central frequency 8.2 GHz, bandwidth 0.3 GHz) in two \ntime intervals: (1) 13:30-19:30 UTC on October 14, 2022 (4.97-5.22 days \nafter the burst), and (2) 11:30-19:30 UTC on October 17, 2022 (7.89-8.22 \ndays after the burst).\n\nIn our analysis, at 5.1 days (after the burst) we detected a faint radio \nemission at 8.2 GHz with a flux density of 26 +- 5 mJy at a position \nconsistent with the optical position (Dichiara et al., GCN 32632) and \nthe radio position (Laskar et al., GCN 32740, Laskar et al., GCN 32757).\n\nWe did not detect any significant signal with a 2-sigma upper limit of \n20 mJy at 8.1 days.\n\n\nWe acknowledge the scheduler and the staff of the Medicina Radio \nTelescope for approving and executing these observations.",
  "circularId": 32791,
  "createdOn": 1666102610000,
  "email": "marco.marongiu@unife.it",
  "subject": "GRB 221009A: Medicina Radio Telescope observations",
  "submitter": "Marco Marongiu at Ferrara U  <marco.marongiu@unife.it>",
  "eventId": "GRB 221009A"
}