{
  "bibcode": "2006GCN..5464....1M",
  "body": "A. Moretti (INAF-OAB), C. Guidorzi (Univ. Bicocca & INAF-OAB),\nP. Romano (INAF-OAB), D.N. Burrows (PSU), N. Gehrels (GSFC)\nreport on behalf of the Swift-XRT team:\n\nBased on the most recent downlinked data on GRB060814 (trigger number\n224552) we find clear evidence of a break in the light curve at\n42(+/-6) ks from the burst trigger (see the light curve at\nhttp://www.brera.inaf.it/~moretti/grbplot/xrt060814.gif )\nwhich could be a jet break.\nThe light curve slope steepens from 1.04+/-0.05 to 1.9+/-0.3\n(errors are quoted at 90% confidence level).\nIn order to convert the XRT count rate to absorbed (unabsorbed)\nflux the conversion factor is 4.9E-11 (8.5E-11)\n\nTherefore we encourage optical data collection on this GRB in order to\nmeasure the redshift and to test whether this break is achromatic.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 5464,
  "createdOn": 1155835296000,
  "email": "alberto.moretti@brera.inaf.it",
  "subject": "GRB060814: Break in the XRT light curve",
  "submitter": "Alberto Moretti at Obs Brera Merate  <alberto.moretti@brera.inaf.it>",
  "eventId": "GRB 060814"
}