{
  "bibcode": "2012GCN.13161....1H",
  "body": "E. A. Hoversten (PSU) and C. Pagani (U. Leicester)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 120328A\n78 s after the BAT trigger (Pagani et al., GCN Circ. 13147).  No optical\nafterglow consistent with the enhanced XRT position (Beardmore el al.,\nGCN Circ. 13153) is detected in the initial UVOT exposures.  Preliminary\n3-sigma upper limits using the UVOT photometric system (Breeveld et al.\n2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC)  \nexposure\nand subsequent exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\n\nwhite_FC            78          228          147         >20.6\nu_FC               290          540          246         >19.6\nwhite               78          764          186         >20.5\nv                  621          813           39         >18.2\nb                  547          739           39         >19.1\nu                  290          715          265         >19.8\nw1                 670          862           39         >18.9\nw2                 769          789           20         >18.6\n\nThe magnitudes in the table are not corrected for the Galactic  \nextinction\ndue to the reddening of E(B-V) = 0.73 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 13161,
  "createdOn": 1332950559000,
  "email": "hoversten@astro.psu.edu",
  "subject": "GRB 120328A: Swift/UVOT Upper Limits",
  "submitter": "Erik Hoversten at Swift/Penn State  <hoversten@astro.psu.edu>",
  "eventId": "GRB 120328A"
}