{
  "bibcode": "2018GCN.22327....1G",
  "body": "J. D. Gropp (PSU) and A. Y. Lien (GSFC/UMBC)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 180111A\n98 s after the BAT trigger (Lien et al., GCN Circ. 22318).\nA fading source consistent with the XRT position\n(Evans et al. GCN Circ. 22319)\nis detected in the initial UVOT exposures.\n\nPreliminary detections using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures\nare:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)           Mag\n\nwhite               84           233          147          19.95+-0.21\nwhite               86          6202         552           20.37+-0.16\nv                     64           5181         206         >19.23\nb                 4365           6002         393         >20.60\nu                   296           5795         639           20.25+-0.35\nw1               5391           5591         196         >19.50\nm2                650             670            19         >17.15\nw2               4776           6407          393           19.60+-0.27\n\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.01 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 22327,
  "createdOn": 1515851606000,
  "email": "jdg44@psu.edu",
  "subject": "GRB 180111A: Swift/UVOT Detection",
  "submitter": "Jeffrey Gropp at PSU  <jdg44@psu.edu>",
  "eventId": "GRB 180111A"
}