{
  "bibcode": "2017GCN.21118....1L",
  "body": "GRB 170519A: Swift/UVOT Detection\n\nS. J. LaPorte (PSU) and T. N. Ukwatta (LANL)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 170519A\n93 s after the BAT trigger (Ukwatta et al., GCN Circ. 21106).\nA fading source consistent with the XRT position\n(Beardmore et al. GCN Circ. 21107)\nis detected in all initial UVOT exposures.\n\nThe preliminary UVOT position is:\n    RA  (J2000) =  10:53:42.45 = 163.42688 (deg.)\n    Dec (J2000) = +25:22:27.5  =  25.37431 (deg.)\nwith an estimated uncertainty of 0.42 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 exposures are: \n\nFilter         T_start(s)   T_stop(s)      Exp(s)                  Mag\n\nwhite              5315          5515         196          17.22+-0.03  \nwhite               582           773          38          16.25+-0.04\nwhite                89           239         147          16.91+-0.03\nv                    68          5926         421          17.46+-0.08  \nb                   557          6594         282          17.66+-0.05\nu                   302           552         245          16.00+-0.04   \nuvw1                680          6337         412          16.76+-0.05 \nuvm2               5932          6131         196          17.13+-0.11   \nuvw2                607           627          19          16.45+-0.20  \n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.03 in the direction of the burst",
  "circularId": 21118,
  "createdOn": 1495236249000,
  "email": "sjl5346@psu.edu",
  "subject": "GRB170519A, Swift-UVOT Detection",
  "submitter": "Sam LaPorte at PSU  <sjl5346@psu.edu>",
  "eventId": "GRB 170519A"
}