{
  "bibcode": "2018GCN.22922....1O",
  "body": "S. R. Oates (U.Warwick) and M. Stamatikos (OSU/NASA/GSFC)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 180706A\n95 s after the BAT trigger (Stamatikos et al., GCN Circ. 22909).\nA source consistent with the XRT position\n(Osborne et al. GCN Circ. 22916) and the COATLI optical detection \n(Watson et al. GCN Circ. 22910) is detected in the initial UVOT exposures.\n\nPreliminary detections and 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: \n\nFilter         T_start(s)   T_stop(s)      Exp(s)           Mag\n\nwhite (FC)          95          245          147         19.88 +/- 0.34\nwhite              587          607           20         18.11 +/- 0.21\nv                  637         1582          117         >18.5\nb                  563          756           39         18.34 +/- 0.30\nu                  308          557          246         17.90 +/- 0.12\nw1                 686         1459           78         18.44 +/- 0.33\nm2                 661         1606          117         >18.8\nw2                 613         1558          117         >19.1\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.02 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 22922,
  "createdOn": 1530902557000,
  "email": "sro@mssl.ucl.ac.uk",
  "subject": "GRB 180706A: Swift/UVOT Detection",
  "submitter": "Samantha Oates at MSSL  <sro@mssl.ucl.ac.uk>",
  "eventId": "GRB 180706A"
}