{
  "bibcode": "2005GCN..4385....1V",
  "body": "A.J. van der Horst (University of Amsterdam) reports on behalf of a larger\ncollaboration:\n\n\"We observed the position of the GRB 051221A afterglow at 4.9 GHz with the\nWesterbork Synthesis Radio Telescope at December 21 13.90 UT to 18.63 UT,\ni.e. 12.05 - 16.78 hours after the burst (GCN 4363).\nWe do not detect a radio source within the SWIFT/XRT error circle (GCN\n4366), in particular at the position of optical (GCN 4369) and infrared\n(GCN 4368) counterparts. The formal flux measurement for a point source at\nthe position of the optical counterpart is 17 +/- 35 microJy.\"\n\nThis message may be cited.",
  "circularId": 4385,
  "createdOn": 1135247882000,
  "email": "avdhorst@science.uva.nl",
  "subject": "GRB 051221A: WSRT Radio Observations",
  "submitter": "Alexander van der Horst at U of Amsterdam  <avdhorst@science.uva.nl>",
  "eventId": "GRB 051221A"
}