{
  "submitter": "Lauren Rhodes at Oxford <lauren.rhodes@physics.ox.ac.uk>",
  "subject": "GRB 230812B: AMI-LA radio detection of afterglow candidate",
  "body": "Lauren Rhodes, Joe Bright, Rob Fender (Oxford), Dave Green, Dave Titterington (Cambridge) report:\n\nWe observed the field of the gamma-ray burst GRB 230812B (GCN 34286) with the Arcminute Microkelvin Imager Large-Array (AMI-LA) at 15.5 GHz beginning at UT 18:13:51.9 on 14-Aug-2023 for a total of 4 hours. The flux standard 3c286 was used to calibrate the bandpass response and flux scale of the AMI-LA and J1658+4737 was used as an interleaved complex gain calibrator.\nWe detect a unresolved source at a position consistent with the one reported in GCN 34394 with a (preliminary) peak flux density of 280uJy/beam. The rms noise in the field is 40uJy/beam. Further observations are planned.\n\nWe thank the staff at the Mullard Radio Astronomy Observatory for carrying out these observations and operating the AMI-LA.\n",
  "bibcode": "2023GCN.34433....1R",
  "circularId": 34433,
  "createdOn": 1692097025203,
  "eventId": "GRB 230812B",
  "submittedHow": "email-legacy"
}