{
  "bibcode": "2022GCN.31498....1B",
  "body": "A. Belles (PSU) and N. J. Klingler (GSFC/UMBC/CRESSTII)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 220118A\n99 s after the BAT trigger (Klingler et al., GCN Circ. 31490).\nA fading source consistent with the XRT position\n(Goad et al., GCN Circ. 31495) is detected in the initial\nUVOT exposures.\n\nThe preliminary UVOT position is:\n    RA  (J2000) =  12:49:04.52 = 192.26885 (deg.)\n    Dec (J2000) = +22:54:56.2  =  22.91562 (deg.)\nwith an estimated uncertainty of 0.44 arc sec. (radius, 90% confidence).\n\nPreliminary detections using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early\nexposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)           Mag\n\nwh                 119          268          145      17.73+/-0.07\nwh               11382        11797          404            >20.26\nu                  276          454          175      17.33+/-0.12\nb                10470        11377          885            >20.56\n\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.025 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 31498,
  "createdOn": 1642613274000,
  "email": "aub1461@psu.edu",
  "subject": "GRB 220118A: Swift/UVOT Detection",
  "submitter": "Alexander Belles at PSU/Swift  <aub1461@psu.edu>",
  "eventId": "GRB 220118A"
}