{
  "bibcode": "2007GCN..7044....1I",
  "body": "S. Immler (NASA/CRESST/GSFC) reports on behalf of the Swift\nUVOT team:\n\nSwift UVOT started observing the field of the SuperAGILE burst GRB\n071104 (Donnarumma et al., GCN Circ. 7042), 20.6 ks after the AGILE\ntrigger. In the first 120-s and co-added 5037-s of data obtained in the \nwhite\nfilter, a possible UVOT afterglow candidate is found consistent with the\nXRT position (Page, GCN 7043), with a magnitude of 20.6+/-0.1 mag,\noverlaying the coincidence-loss structure of a nearby bright star.\n\nThe value quoted above is not corrected for the expected Galactic\nextinction corresponding to a reddening of E_{B-V} = 0.54 mag in the\ndirection of the burst (Schlegel et al. 1998).\n\nFurther analysis is required due to possible contamination with the\ncoincidence-loss structure of the nearby star and the high source\ndensity of the field in the Galactic plane.",
  "circularId": 7044,
  "createdOn": 1194242190000,
  "email": "immler@milkyway.gsfc.nasa.gov",
  "subject": "GRB 071104: Possible Swift UVOT Afterglow Candidate",
  "submitter": "Stefan Immler at NASA/GSFC  <immler@milkyway.gsfc.nasa.gov>",
  "eventId": "GRB 071104"
}