{
  "bibcode": "2014GCN.16157....1C",
  "body": "M. M. Chester (PSU), E. Sonbas (NASA/GSFC/Adiyaman Univ.), and \nF. E. Marshall (NASA/GSFC) report on behalf of the Swift/UVOT team:\n\nFurther analysis confirms UVOT's detection of the afterglow of GRB 140423A\n(Sonbas et al., GCN Circ. 16142) reported by Elenin et al. (GCN Circ. 16143).\n\nThe UVOT position based on the initial exposure is:\n   RA  (J2000) =  13:09:08.54 = 197.28558 (deg.)\n   Dec (J2000) = +49:50:29.4  =  49.84150 (deg.)\nwith an estimated uncertainty of 0.48 arc sec. (radius, 90% confidence).\nThis position is consistent with the enhanced XRT position reported by \nBeardmore et al. (GCN Circ. 16155).\n\nPreliminary detections and 3-sigma upper limits using the UVOT photometric \nsystem (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             2947         3097          147         19.80 +/- 0.09\nv                 3104         3303          197         19.33 +/- 0.19\nb                 3924         4123          197         19.96 +/- 0.16\nu                 3719         5353          393        >21.3\nw1                3513         5148          393        >21.7\nm2                4743         4943          197        >20.7\nw2                4334        11161          808        >22.1\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": 16157,
  "createdOn": 1398287544000,
  "email": "chester@swift.psu.edu",
  "subject": "GRB 140423A: Further Observations with Swift/UVOT",
  "submitter": "Margaret Chester at PSU  <chester@swift.psu.edu>",
  "eventId": "GRB 140423A"
}