{
  "bibcode": "2012GCN.13138....1K",
  "body": "N. P. M. Kuin (MSSL-UCL) and B. Sbarufatti (INAF-OAB/PSU)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 120327A\n141 s after the BAT trigger (Sbarufatti et al., GCN Circ. 13123).\nA source consistent with the enhanced XRT position (Osborne et al.\nGCN Circ. 13135) is detected in the initial UVOT exposures.\n\nThe preliminary UVOT position is:\n   RA  (J2000) =  16:27:27.48  = 246.864500 (deg.)\n   Dec (J2000) = -29:24:53.74  = -29.414928 (deg.)\nwith an estimated uncertainty of 0.48 arc sec. (radius, 90% confidence).\n\nPreliminary detections and 3-sigma upper limits using the UVOT\nphotometric 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\nv                  448          468           20         15.68 +/- 0.10\nb                  396          416           20         16.97 +/- 0.11\nu                  141          391          246         18.02 +/- 0.08\nw1                 497         1295           97        >19.0\nm2                 622         1271           78        >19.2\nw2                 424         1222           97        >19.6\n\nThe absence of detection in uvw1, uvm2, and uvw2 is consistent with the\nreported redshift of 2.81 (Perley & Tanvir, GCN Circ 13133, and\nKrueler et al, GCN Circ. 13134).\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.34 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 13138,
  "createdOn": 1332852638000,
  "email": "npkuin@gmail.com",
  "subject": "GRB 120327A: Swift/UVOT further analysis",
  "submitter": "Paul Kuin at MSSL  <npkuin@gmail.com>",
  "eventId": "GRB 120327A"
}