{
  "bibcode": "1999GCN...311....1P",
  "body": "Luigi Piro (BeppoSAX Mission Scientist on behalf of the BeppoSAX team) report:\n\nBeppoSAX MAIL n. 99/8: GRB990510: possible X-ray afterglow\n\nA BeppoSAX follow-up of GRB990510 started about 8 hr after the burst.\nPreliminary analysis of the first two orbits of the MECS data at SOC shows\na previously unknown strong source in the center of the WFC error circle.\n\nPreliminary coordinates  are:\nR.A.(2000)= 204.605\nDEC(2000)= -80.490\n\nThe error radius is 1.5'\n\nConsidering its strength, this X-ray source is likely the X-ray\nafterglow of GB990510. BeppoSAX is continuing its observation.",
  "circularId": 311,
  "createdOn": 926372292000,
  "email": "piro@alpha1.ias.rm.cnr.it",
  "subject": "GRB990510: NFI X-ray source",
  "submitter": "Luigi Piro at IAS/CNR Frascati  <piro@alpha1.ias.rm.cnr.it>",
  "eventId": "GRB 990510"
}