{
  "bibcode": "2020GCN.29177....1B",
  "body": "���A. Belles (PSU) and J. D. Gropp (PSU)\r\n\r\nreport on behalf of the Swift/UVOT team:\r\n\r\n\r\n\r\nThe Swift/UVOT began settled observations of the field of GRB 201223A\r\n\r\n79 s after the BAT trigger (Gropp et al., GCN Circ. 29158).\r\n\r\nA source consistent with the XRT position (Goad et al., GCN Circ. 29170)\r\n\r\nis detected in the initial UVOT exposures.\r\n\r\n\r\n\r\nThe preliminary UVOT position is:\r\n\r\n    RA  (J2000) =  08:51:09.51 = 132.78961 (deg.)\r\n\r\n    Dec (J2000) = +71:10:47.4  =  71.17984 (deg.)\r\n\r\nwith an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence).\r\n\r\n\r\n\r\nPreliminary detections and 3-sigma upper limits using the UVOT photometric system\r\n\r\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are:\r\n\r\n\r\n\r\nFilter         T_start(s)   T_stop(s)      Exp(s)           Mag\r\n\r\n\r\n\r\nwhite_FC          79             229            147      16.06+/-0.03\r\n\r\nwhite               571           1019            186      18.04+/-0.08\r\n\r\nwhite             5921           6121            196           >20.17\r\n\r\nwhite           12121         12630            497      20.09+/-0.30\r\n\r\nv                      621           1069              58           >17.44\r\n\r\nb                      547           1167              58      17.97+/-0.25\r\n\r\nb                  11208         12115            885           >20.38\r\n\r\nu_FC               292             541            246      16.75 +/- 0.04\r\n\r\nu                      694           1142              38           >17.58\r\n\r\nw1                   670           1118              58           >17.65\r\n\r\nm2                   645           1093              58           >17.87\r\n\r\nw2                   596           1045              58           >17.81\r\n\r\n\r\n\r\nThe magnitudes in the table are not corrected for the Galactic extinction\r\ndue to the reddening of E(B-V) = 0.04 in the direction of the burst\r\n(Schlegel et al. 1998).",
  "circularId": 29177,
  "createdOn": 1609020189000,
  "email": "aub1461@psu.edu",
  "subject": "GRB 201223A: Swift/UVOT Detection",
  "submitter": "Alexander Belles at PSU/Swift  <aub1461@psu.edu>",
  "eventId": "GRB 201223A"
}