{
  "bibcode": "1999GCN...203....1P",
  "body": "Luigi Piro on behalf of the BeppoSAX team report:\n\nA BeppoSAX follow-up of GRB990123 initiated around 15:40 UT,\ni.e.  6 hr after the burst.  Preliminary analysis of the first 20 minutes\nof the data at SOC  shows a previously unknown strong source\n(about 10**-11 c.g.s in the 1.6-10 keV) in the center of the WFC error circle.\n\nPreliminary coordinates  are:\nR.A.(2000)= 231.374\nDEC(2000)= +44.758\nThe error radius is  1.5'.\n\nConsidering its strenght, this X-ray source is very likely the X-ray\nafterglow of GB990123.  We will continue to observe it to monitor\nits temporal evolution.",
  "circularId": 203,
  "createdOn": 917117276000,
  "email": "piro@alpha1.ias.rm.cnr.it",
  "subject": "GRB990123, BeppoSAX-NFI X-ray afterglow detection",
  "submitter": "Luigi Piro at IAS/CNR Frascati  <piro@alpha1.ias.rm.cnr.it>",
  "eventId": "GRB 990123"
}