{
  "bibcode": "2012GCN.14018....1V",
  "body": "A.J. van der Horst (University of Amsterdam) reports on behalf\nof a large collaboration:\n\n\"We observed the position of the GRB 121128A afterglow at 4.9 GHz with\nthe Westerbork Synthesis Radio Telescope at November 28 11.34 to\n21.06 UT, i.e. 6.2 - 16.0 hours after the burst (GCN 14007).\nWe do not detect a radio source at the position of the optical\ncounterpart (GCN 14007). The three-sigma rms noise in the map around\nthat position is 69 microJy per beam. The formal flux measurement for\na point source at the position of the optical counterpart is 59 +/- 23 \nmicroJy.\n\nWe would like to thank the WSRT staff for quickly scheduling and\nobtaining these observations.\"",
  "circularId": 14018,
  "createdOn": 1354144619000,
  "email": "A.J.vanderHorst@uva.nl",
  "subject": "GRB 121128A: WSRT radio observation",
  "submitter": "Alexander van der Horst at U of Amsterdam  <A.J.vanderHorst@uva.nl>",
  "eventId": "GRB 121128A"
}