{
  "bibcode": "1998GCN...168....1G",
  "body": "T.J. Galama, P. Vreeswijk (U. of Amsterdam), J. van Paradijs (U. of\nAmsterdam and U. of Alabama in Huntsville), C. Kouveliotou\n(USRA/MSFC), R. Strom (NFRA and U. of Amsterdam), G. de Bruyn (NFRA\nand U. of Groningen) report:\n\n\"We have observed the error box of GRB 981220 (Smith et al. 1998, GCN\nCirc 159; Hurley et al. 1998, GCN Circ 160) with the Westerbork Radio\nSynthesis Telescope (WSRT). We observed for 7 hours switching between\n4.88 and 1.38 GHz on Dec 22.98 UT, 1998, and for 12 hours at 4.88 GHz\non Dec 23.88 UT, 1998. We find no sources in the errorbox at 1.38 GHz\ndown to 200 microJy (4 sigma).  At RA = 3h42m28.98s +- 0.07s, Dec =\n+17d09'14.7'' +- 1.6'', we detect a source at 4.88 GHz at 260 +- 90\nmicroJy (Dec 22.98), which is not detected at 1.38 GHz. On Dec 23.88\nwe measure 200 +- 50 microJy (4.88 GHz). The location of the source is\nat the edge of the error box of GRB 981220. Whether or not this source\nis related to GRB 981220 is unclear. We will continue monitoring the\nerror box at 4.88 GHz.\"\n\nThis message is citeable.",
  "circularId": 168,
  "createdOn": 914525312000,
  "email": "titus@astro.uva.nl",
  "subject": "GRB 981220, radio observations",
  "submitter": "Titus Galama at U.Amsterdam  <titus@astro.uva.nl>",
  "eventId": "GRB 981220"
}